ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch
- Black
- DC-powered
- Metal
- 4K ultra HD
- 1080p
- 2160p
- 3D
- HDMI
- USB
- HDCP 2.3
- Push-button
- Remote control
- Software-controlled
- Manual
- EDID management
- Signal amplification
- HDMI 2.0b
Specifications
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports video resolutions up to 4K@60Hz 4:4:4 8-bit deep color and HDCP 2.3. The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch features multi-view function for multiple sources on a single screen, two HDMI outputs, and one HDBaseT 3.0 output mirrored with HDMI OUT 2. This ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch extends uncompressed 4K60Hz up to 132ft/40m or 4K30Hz/1080P60Hz up to 230ft/70m via single CAT6A cable. Each USB-C input supports DisplayPort Alternate mode A/V up to 4K@60Hz, USB 3.2 Gen 1 5Gbps data, up to 60W power charging, and 1Gbps Ethernet.
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch Features
☆ Video resolution up to 4K@60Hz 4:4:4, HDMI 2.0b, HDCP 2.3, DP 1.4 and HDBaseT 3.0 compliant
☆ USB 3.2 Gen 1 up to 5Gbps
☆ 4x2 seamless switching (single screen) and fast switching (multiview) function
☆ Manual switching or auto switching mode
☆ Multiple multiview display modes: Auto / Single / PIP / PBP / Triple / Quad / Custom
☆ Input: 2x USB-C, 2x HDMI, 1x Analog audio, 1x Dante 2ch
☆ Output: 1x HDMI, 1x HDMI + HDBaseT mirrored, 1x Analog audio, 1x Dante 2ch
☆ USB-C supports DisplayPort Alternate mode for A/V, USB 3.2, 1G LAN and 60W charging
☆ Local USB 3.2 switching and extending USB 2.0 over HDBaseT 3.0
☆ Local USB KVM hotkeys and mouse switching
☆ Uncompressed 4K60 4:4:4 over HDBaseT 3.0 up to 132ft/40m via single CAT6A cable
☆ Uncompressed 1080P & 4K30 over HDBaseT 3.0 up to 230ft/70m via single CAT6A cable
☆ Audio embedded and de-embedded; audio DSP for gain, equalizer, volume and delay
☆ Dante 2x2 audio input and output
☆ CEC/RS-232 control external devices ON/OFF with display auto power
☆ Advanced EDID management (17 modes including user-defined)
☆ Standard PoE power supply from TX to RX (TX_PSE, RX_PD)
☆ Flexible control via front panel buttons, IR remote, RS-232, TCP/IP or Web GUI
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides flexible source switching, multiview presentation, professional audio processing, and reliable 4K60 signal distribution.
Package Contents
① 1x 4x2 Seamless Presentation Switch
② 1x HDBaseT Receiver
③ 1x IR Blaster Cable (1.5 metres)
④ 1x IR Wideband Receiver Cable (1.5 metres)
⑤ 3x 3pin-3.5mm Phoenix Connector (male)
⑥ 3x 5pin-3.5mm Phoenix Connector (male)
⑦ 4x Mounting Ear
⑧ 8x Machine Screw
⑨ 1x 24V/8A Desktop Power Supply & 1x AC Power Cord (1.5 metres)
⑩ 1x IR Remote
1x User Manual
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch includes the essential accessories required for professional installation and operation.
Specifications
| Technical | |
| HDMI Compliance | HDMI 2.0b |
| HDCP Compliance | HDCP 2.3 |
| DP Version | DP 1.4 |
| Video Bandwidth | 18Gbps |
| Video Resolution | Up to 4K@60Hz 4:4:4 8-bit deep color |
| Color Space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12-bit |
| IR Level | 12Vp-p |
| IR Frequency | Wideband 20K–60KHz |
| USB Bandwidth | USB 3.2 Gen 1 up to 5Gbps |
| Network Bandwidth (LAN & USB-C) | 1Gbps |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Transmission Distance | |
| HDBaseT | 4K60: 131ft/40m | 1080P & 4K30: 230ft/70m (CAT6A F/FTP) |
| HDMI Cable | Up to 9.8ft/3m |
| USB-C Cable | Up to 9.8ft/3m |
| Audio | |
| Audio Formats | USB-C/HDMI/HDBT: Digital audio, 32–192kHz/24bit, LPCM 2CH LINE IN: Analog audio, Balanced/unbalanced 2CH, Max input level 2Vrms LINE OUT: Analog audio, Balanced 2CH (Max 2Vrms) / Unbalanced 2CH (Max 1Vrms) DANTE: Digital audio 2x2 in/out, LPCM 2CH, 44.1K–96KHz 16/24bit |
| Audio Sample Rate (Dante) | 44.1 / 48 / 88.2 / 96kHz at 24bit |
| Audio Network Bandwidth | 100Mbps |
| TX Line Input Level (Max) | 8.2dBu (2Vrms) @ balanced or unbalanced audio |
| TX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| RX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| Input Impedance | 10K Ohms |
| Output Impedance | 330 Ohms |
| Frequency Response | 20Hz to 20kHz (+0.5dB / -1dB) |
| Audio S/N Ratio | 93dB @ 2Vrms, 1kHz A-weighted |
| Audio THD+N | <0.1% @ 0dBV, 1kHz |
| Audio Output Sync Delay (TX) | 0 to 50ms |
| Audio Output Sync Delay (RX) | <1ms |
| Dante Audio Delay | 2 / 3 / 4 / 5 / 10ms |
| Transmitter (Switch) Connections | |
| Input | 2x HDMI IN [HDMI Type A, 19-pin female] 2x USB-C IN [Type C, 24-pin female, 60W charging] 1x LINE IN [5pin-3.5mm phoenix connector] 1x DANTE IN [RJ45] |
| Output | 2x HDMI OUT [HDMI Type A, 19-pin female] 1x HDBT OUT [RJ45, 48V PoE/PSE] 1x LINE OUT [5pin-3.5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x RS-232 CTL [3pin-3.5mm phoenix connector] 1x LAN [RJ45, 1G] 2x USB 3.2 HOST [USB Type B, 9-pin female] 3x USB 3.2 DEVICES [USB Type A, 9-pin female] 2x USB 1.1 KVM [Type A, 4-pin female] 1x USB-C DEVICE [Type C, 24-pin female] 1x IR IN [3.5mm jack, 12V level] 1x IR OUT [3.5mm jack, 12V level] |
| HDBaseT Receiver Connections | |
| Input | 1x HDBaseT IN [RJ45, 48V PoE/PD] 1x HDMI IN [Type A, 19-pin female] |
| Output | 1x HDMI OUT [Type A, 19-pin female] 1x LINE OUT [5pin-3.5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x USB HOST [Type B, 4-pin female] 2x USB DEVICES [Type A, 4-pin female] 1x SERVICE [Micro USB, 5-pin female] 1x IR IN [3.5mm jack, 12V level] 1x IR OUT [3.5mm jack, 12V level] |
| Mechanical | |
| Housing | Front panel: Aluminium; Rear case: Metal Enclosure — Black |
| Dimensions | Transmitter: 220mm [W] × 220mm [D] × 44.5mm [H] Receiver: 140mm [W] × 105mm [D] × 21.5mm [H] |
| Weight | Transmitter: 1.78kg | Receiver: 424g |
| Power Supply | Input: AC100–240V 50/60Hz; Output: DC 24V/8A (CE/FCC/UL certified) Receiver also supports PoE (through HDBaseT IN port) |
| Power Consumption (Max) | 170W |
| Operating Temperature | 0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature | -40°C ~ 60°C / -40°F ~ 140°F |
| Operating Humidity | 20%~80% (relative humidity, non-condensing) |
| Storage Humidity | 10%~90% (relative humidity, non-condensing) |
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch combines HDMI, USB-C, HDBaseT 3.0, Dante audio, USB KVM, and network control in one integrated AV solution.
Operation Controls and Functions
Switch — Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | POWER Button | Press and hold for 3 seconds to enter standby mode (button light red). In standby mode, short press to power on (button light blue). |
| 2 | IR Window | IR signal receiving window for IR remote control. |
| 3 | OUT 1 Button | Press to select the input channel for HDMI OUT 1. Button light is on when OUT 1 is connected to a display device; off otherwise. |
| 4 | Input LEDs (USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 / AUTO) | USB-C 1/USB-C 2/HDMI 3/HDMI 4: Steady green = corresponding input is selected; off = not selected. AUTO: On when auto switching / automatic layout mode is active. |
| 5 | OUT 2 Button | Press to select the input channel for HDMI OUT 2. Button light is on when OUT 2 is connected to a display device; off otherwise. |
| 6 | USB DEVICES Ports 1/2 | USB 3.2 Gen 1 extension ports supporting 5V/900mA output. Connect USB 3.0 flash drives, cameras, printers, etc. |
| 7 | USB 1.1 KVM Ports | USB 1.1 device ports for keyboard and mouse, supporting hotkey function and 5V/500mA output. |
The front-panel controls of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch allow convenient source selection, automatic switching, and system operation.
Switch — Rear Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | DANTE Port | Dante network port — connect to a network switch with other Dante devices. Supports both Dante audio receive and transmit. |
| 2 | LINE IN Port | Analog audio input (5pin-3.5mm phoenix connector). Balanced/unbalanced, max 2Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 3 | LINE OUT Port | Analog audio output (5pin-3.5mm phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 4 | IR IN Port | Connect the IR receiver cable — used for IR signal pass-through or controlling this product via IR remote. IR blaster pin 1: +, pin 2: −. IR receiver pin 1: IR Signal, pin 2: GND, pin 3: 12V. |
| 5 | IR OUT Port | Connect the IR blaster cable. The IR signal originates from the HDBaseT Receiver IR IN port. |
| 6 | RS-232 Port | RS-232 serial port with two functions: (1) RS-232 signal pass-through or control of external devices; (2) Valens firmware and hotkey function firmware update (switchable via API commands). |
| 7 | RS-232 CTL Port | RS-232 serial port for API command control and MCU update. Default baud rate: 115200 (8N1). TCP/IP port: 8000. |
| 8 | RESET Button | Press and hold for 5 seconds — all front panel LEDs flash at 1Hz. When LEDs stop flashing, unit has been restored to factory default settings. |
| 9 | LAN Port | 1G Ethernet port for TCP/IP and Web GUI. Connect to a router or network switch. Default IP: 192.168.0.100. |
| 10 | DC 24V Port | Connect the included DC 24V/8A power adapter. |
| 11 | USB DEVICES 3/4 Ports | USB 3.2 Gen 1 extension ports supporting 5V/900mA output. |
| 12 | USB-C 1/2 Ports | Multipurpose USB-C ports with four functions: (1) USB-C A/V signal input (DisplayPort Alternate mode, up to 4K@60Hz); (2) USB Host port (USB 3.2 Gen 1 5Gbps); (3) 60W charging to connected device; (4) USB-C network access (1Gbps Ethernet passthrough). |
| 13 | HOST 3/4 Ports | USB Host ports supporting USB 3.2 Gen 1 5Gbps. Connect to PC host for KVM functionality. |
| 14 | IN 3/4 Ports (HDMI) | HDMI signal input ports — connect to HDMI source devices (DVD, Blu-ray, PC) with HDMI cable. |
| 15 | OUT 1/2 Ports (HDMI) | HDMI signal output ports — connect to HDMI display devices (TV, monitor) with HDMI cable. |
| 16 | HDBT 2 Port | HDBaseT output port — connect to the HDBaseT IN port of the receiver with a CAT6A (F/FTP) cable. Supports PoE PSE to power the receiver. |
| 17 | Link Signal Indicator (Green) | On: Transmitter and Receiver connected and linked. Flashing: Link abnormal. Off: Not linked. |
| 18 | Data Signal Indicator (Yellow) | On: Video signal input with HDCP. Flashing: Video signal without HDCP. Off: No video signal. |
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch offers comprehensive connectivity for video, audio, USB, LAN, IR, and RS-232 integration.
HDBaseT Receiver Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED (Red) | On when the receiver is powered on. |
| 2 | LINK LED (Green) | On: Good connection to transmitter. Flashing: Poor connection. Off: Not connected. |
| 3 | VIDEO LED (Green) | On: Video signal with HDCP. Flashing: Video signal without HDCP. Off: No video signal. |
| 4 | HDBT LED (Green) | On when the HDBaseT IN port is selected as the signal input channel. |
| 5 | HDMI LED (Green) | On when the HDMI IN port is selected as the signal input channel. |
| 6 | SELECT Button | Press to select the signal input channel (toggles between HDBaseT IN and HDMI IN). |
| 7 | IR IN Port | Connect the IR receiver cable — IR signal will be sent to the IR OUT port of the transmitter. |
| 8 | IR OUT Port | Connect the IR blaster cable — IR signal originates from the IR IN port of the transmitter. |
| 9 | DEVICES Ports (1/2) | USB 2.0 extension ports supporting 5V/500mA output. Connect whiteboard, mouse, keyboard, USB camera or other USB devices. |
| 10 | SERVICE Port | Micro USB port for firmware update. |
| 11 | HDBaseT IN Port | HDBaseT input port — connect to the HDBT 2 port of the transmitter with a CAT6A (F/FTP) cable. Supports PoE PD (can power the receiver). |
| 12 | Data Signal Indicator (Yellow) | On: Video signal with HDCP. Flashing: Video without HDCP. Off: No video signal. |
| 13 | Link Signal Indicator (Green) | On: Transmitter and Receiver linked. Flashing: Link abnormal. Off: Not linked. |
| 14 | HDMI IN Port | HDMI signal input — connect to HDMI source device with HDMI cable. |
| 15 | HOST Port | USB Host port supporting USB 2.0. Connect to PC for USB KVM over HDBaseT. |
| 16 | HDMI OUT Port | HDMI signal output — connect to HDMI display device (TV, monitor) with HDMI cable. |
| 17 | LINE OUT Port | Analog audio output (5pin-3.5mm phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 18 | RS-232 Port | RS-232 serial port for RS-232 signal pass-through or controlling external devices. |
| 19 | DC 24V Port | Connect the DC 24V power adapter. Note: The receiver can also be powered by PoE through the HDBaseT IN port. |
When paired with its receiver, the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports long-distance 4K video, USB, audio, control, and PoE transmission.
IR Remote Control
| Button / Group | Function |
|---|---|
| Power | Press to power on the switch or set it to standby mode. |
| OUT 1 — USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 | Select input source for OUT 1 in single screen display mode. Corresponding input LED lights green. |
| OUT 1 — Multiview (⊞) | Short press to cycle through multiview modes: Single → PIP → PBP → Triple → Quad. |
| OUT 1 — ◄ / ► | Cycle to previous or next input source for OUT 1 in single screen mode. |
| OUT 1 — AUTO | Enable/disable auto switching for OUT 1. |
| OUT 1 — RES. | Cycle through output resolution options for OUT 1. |
| OUT 1 — MUTE | Mute/unmute audio of OUT 1. |
| OUT 1 — VOL− / VOL+ | Decrease/increase audio output volume of OUT 1. |
| OUT 2 buttons | Same set of controls as OUT 1, applied to OUT 2 / HDMI/HDBT Out 2. |
| RX HDBT | Select the HDBaseT IN port as the signal source input channel of the receiver. |
| RX HDMI | Select the HDMI IN port as the signal source input channel of the receiver. |
| PRESET | Cycle through preset application scenes. |
The included remote enables convenient operation of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch from within the installation environment.
IR Cable Pin Assignment
The pin assignment of the IR Receiver cable and IR Blaster cable is as below:
Multiview Display Modes
The presentation switch supports the following multiview display modes, selectable via Web GUI, IR remote, or RS-232 commands:
Auto — recalls the multiview display mode set in Web GUI automatically.
Single — single screen display.
PBP — dual screen side by side: Dual-LR or Dual-TB.
PIP — picture-in-picture: PIP-LT, PIP-LB, PIP-RT, PIP-RB.
Triple — triple screen: Triple-L, Triple-R, Triple-T, Triple-B.
Quad — quad screen: Quad-L, Quad-R, Quad-T, Quad-B, Quad-S.
Copy Output — copies the display mode of the other output port.
Custom — five user-customised window layouts (Custom 1–5) with free window size, position and source assignment.
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides multiple display layouts for meetings, classrooms, training facilities, and collaborative presentations.
Keyboard & Mouse Hotkeys
Keyboard hotkeys (use Scroll Lock×2 or Ctrl×2 as the prefix):
Switch OUT 1 to input 1–4: prefix + 1 + [1/2/3/4]
Switch OUT 2 to input 1–4: prefix + 2 + [1/2/3/4]
Switch OUT 1 to next/previous input: prefix + 1 + Page Up / Page Down
Switch OUT 2 to next/previous input: prefix + 2 + Page Up / Page Down
Enable/Disable buzzer: prefix + F12
Note: Do not use the numeric keypad on the right of the keyboard.
Mouse hotkeys:
Double-click scroll wheel then right-click: Switch OUT 1 to next input.
Double-click scroll wheel then left-click: Switch OUT 2 to next input.
USB KVM functionality allows the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch to simplify computer control across connected sources and displays.
Web GUI
Default IP address: 192.168.0.100. Connect the LAN port to a PC on the same network segment and enter the IP in a browser. Default login credentials: Admin / 1234 and User / 1234. The Web GUI provides the following pages: Information, Preset (up to 8 scenes), Input (EDID/HDCP per port), Output (scaling/HDCP/on-off per output), Video (window layout, multiview, freeze, AV mute), Audio (matrix, input/output gain, GEQ, delay, Dante routing), USB (follow video / manual / auto switch), RS-232, Network, and System (auto switch, display control, CEC, fan, firmware update).
The Web GUI of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides centralized control of video, audio, USB, EDID, presets, and network settings.
RS-232 Control
Connect the RS-232 CTL port to a PC using a 3pin-3.5mm phoenix connector cable and an RS-232 to USB cable. Default baud rate: 115200 (8N1). TCP/IP port: 8000. Full ASCII command set covers system settings, input/output control, video layout, audio matrix, USB switching, CEC, preset recall, and network configuration. Send the command "help" to retrieve the full command list.
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports professional automation through RS-232 commands, TCP/IP control, presets, and external device management.
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch Application Example
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports video resolutions up to 4K@60Hz 4:4:4 8-bit deep color and HDCP 2.3. The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch features multi-view function for multiple sources on a single screen, two HDMI outputs, and one HDBaseT 3.0 output mirrored with HDMI OUT 2. This ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch extends uncompressed 4K60Hz up to 132ft/40m or 4K30Hz/1080P60Hz up to 230ft/70m via single CAT6A cable. Each USB-C input supports DisplayPort Alternate mode A/V up to 4K@60Hz, USB 3.2 Gen 1 5Gbps data, up to 60W power charging, and 1Gbps Ethernet.
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch Features
☆ Video resolution up to 4K@60Hz 4:4:4, HDMI 2.0b, HDCP 2.3, DP 1.4 and HDBaseT 3.0 compliant
☆ USB 3.2 Gen 1 up to 5Gbps
☆ 4x2 seamless switching (single screen) and fast switching (multiview) function
☆ Manual switching or auto switching mode
☆ Multiple multiview display modes: Auto / Single / PIP / PBP / Triple / Quad / Custom
☆ Input: 2x USB-C, 2x HDMI, 1x Analog audio, 1x Dante 2ch
☆ Output: 1x HDMI, 1x HDMI + HDBaseT mirrored, 1x Analog audio, 1x Dante 2ch
☆ USB-C supports DisplayPort Alternate mode for A/V, USB 3.2, 1G LAN and 60W charging
☆ Local USB 3.2 switching and extending USB 2.0 over HDBaseT 3.0
☆ Local USB KVM hotkeys and mouse switching
☆ Uncompressed 4K60 4:4:4 over HDBaseT 3.0 up to 132ft/40m via single CAT6A cable
☆ Uncompressed 1080P & 4K30 over HDBaseT 3.0 up to 230ft/70m via single CAT6A cable
☆ Audio embedded and de-embedded; audio DSP for gain, equalizer, volume and delay
☆ Dante 2x2 audio input and output
☆ CEC/RS-232 control external devices ON/OFF with display auto power
☆ Advanced EDID management (17 modes including user-defined)
☆ Standard PoE power supply from TX to RX (TX_PSE, RX_PD)
☆ Flexible control via front panel buttons, IR remote, RS-232, TCP/IP or Web GUI
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides flexible source switching, multiview presentation, professional audio processing, and reliable 4K60 signal distribution.
Package Contents
① 1x 4x2 Seamless Presentation Switch
② 1x HDBaseT Receiver
③ 1x IR Blaster Cable (1.5 metres)
④ 1x IR Wideband Receiver Cable (1.5 metres)
⑤ 3x 3pin-3.5mm Phoenix Connector (male)
⑥ 3x 5pin-3.5mm Phoenix Connector (male)
⑦ 4x Mounting Ear
⑧ 8x Machine Screw
⑨ 1x 24V/8A Desktop Power Supply & 1x AC Power Cord (1.5 metres)
⑩ 1x IR Remote
1x User Manual
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch includes the essential accessories required for professional installation and operation.
Specifications
| Technical | |
| HDMI Compliance | HDMI 2.0b |
| HDCP Compliance | HDCP 2.3 |
| DP Version | DP 1.4 |
| Video Bandwidth | 18Gbps |
| Video Resolution | Up to 4K@60Hz 4:4:4 8-bit deep color |
| Color Space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12-bit |
| IR Level | 12Vp-p |
| IR Frequency | Wideband 20K–60KHz |
| USB Bandwidth | USB 3.2 Gen 1 up to 5Gbps |
| Network Bandwidth (LAN & USB-C) | 1Gbps |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Transmission Distance | |
| HDBaseT | 4K60: 131ft/40m | 1080P & 4K30: 230ft/70m (CAT6A F/FTP) |
| HDMI Cable | Up to 9.8ft/3m |
| USB-C Cable | Up to 9.8ft/3m |
| Audio | |
| Audio Formats | USB-C/HDMI/HDBT: Digital audio, 32–192kHz/24bit, LPCM 2CH LINE IN: Analog audio, Balanced/unbalanced 2CH, Max input level 2Vrms LINE OUT: Analog audio, Balanced 2CH (Max 2Vrms) / Unbalanced 2CH (Max 1Vrms) DANTE: Digital audio 2x2 in/out, LPCM 2CH, 44.1K–96KHz 16/24bit |
| Audio Sample Rate (Dante) | 44.1 / 48 / 88.2 / 96kHz at 24bit |
| Audio Network Bandwidth | 100Mbps |
| TX Line Input Level (Max) | 8.2dBu (2Vrms) @ balanced or unbalanced audio |
| TX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| RX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| Input Impedance | 10K Ohms |
| Output Impedance | 330 Ohms |
| Frequency Response | 20Hz to 20kHz (+0.5dB / -1dB) |
| Audio S/N Ratio | 93dB @ 2Vrms, 1kHz A-weighted |
| Audio THD+N | <0.1% @ 0dBV, 1kHz |
| Audio Output Sync Delay (TX) | 0 to 50ms |
| Audio Output Sync Delay (RX) | <1ms |
| Dante Audio Delay | 2 / 3 / 4 / 5 / 10ms |
| Transmitter (Switch) Connections | |
| Input | 2x HDMI IN [HDMI Type A, 19-pin female] 2x USB-C IN [Type C, 24-pin female, 60W charging] 1x LINE IN [5pin-3.5mm phoenix connector] 1x DANTE IN [RJ45] |
| Output | 2x HDMI OUT [HDMI Type A, 19-pin female] 1x HDBT OUT [RJ45, 48V PoE/PSE] 1x LINE OUT [5pin-3.5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x RS-232 CTL [3pin-3.5mm phoenix connector] 1x LAN [RJ45, 1G] 2x USB 3.2 HOST [USB Type B, 9-pin female] 3x USB 3.2 DEVICES [USB Type A, 9-pin female] 2x USB 1.1 KVM [Type A, 4-pin female] 1x USB-C DEVICE [Type C, 24-pin female] 1x IR IN [3.5mm jack, 12V level] 1x IR OUT [3.5mm jack, 12V level] |
| HDBaseT Receiver Connections | |
| Input | 1x HDBaseT IN [RJ45, 48V PoE/PD] 1x HDMI IN [Type A, 19-pin female] |
| Output | 1x HDMI OUT [Type A, 19-pin female] 1x LINE OUT [5pin-3.5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x USB HOST [Type B, 4-pin female] 2x USB DEVICES [Type A, 4-pin female] 1x SERVICE [Micro USB, 5-pin female] 1x IR IN [3.5mm jack, 12V level] 1x IR OUT [3.5mm jack, 12V level] |
| Mechanical | |
| Housing | Front panel: Aluminium; Rear case: Metal Enclosure — Black |
| Dimensions | Transmitter: 220mm [W] × 220mm [D] × 44.5mm [H] Receiver: 140mm [W] × 105mm [D] × 21.5mm [H] |
| Weight | Transmitter: 1.78kg | Receiver: 424g |
| Power Supply | Input: AC100–240V 50/60Hz; Output: DC 24V/8A (CE/FCC/UL certified) Receiver also supports PoE (through HDBaseT IN port) |
| Power Consumption (Max) | 170W |
| Operating Temperature | 0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature | -40°C ~ 60°C / -40°F ~ 140°F |
| Operating Humidity | 20%~80% (relative humidity, non-condensing) |
| Storage Humidity | 10%~90% (relative humidity, non-condensing) |
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch combines HDMI, USB-C, HDBaseT 3.0, Dante audio, USB KVM, and network control in one integrated AV solution.
Operation Controls and Functions
Switch — Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | POWER Button | Press and hold for 3 seconds to enter standby mode (button light red). In standby mode, short press to power on (button light blue). |
| 2 | IR Window | IR signal receiving window for IR remote control. |
| 3 | OUT 1 Button | Press to select the input channel for HDMI OUT 1. Button light is on when OUT 1 is connected to a display device; off otherwise. |
| 4 | Input LEDs (USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 / AUTO) | USB-C 1/USB-C 2/HDMI 3/HDMI 4: Steady green = corresponding input is selected; off = not selected. AUTO: On when auto switching / automatic layout mode is active. |
| 5 | OUT 2 Button | Press to select the input channel for HDMI OUT 2. Button light is on when OUT 2 is connected to a display device; off otherwise. |
| 6 | USB DEVICES Ports 1/2 | USB 3.2 Gen 1 extension ports supporting 5V/900mA output. Connect USB 3.0 flash drives, cameras, printers, etc. |
| 7 | USB 1.1 KVM Ports | USB 1.1 device ports for keyboard and mouse, supporting hotkey function and 5V/500mA output. |
The front-panel controls of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch allow convenient source selection, automatic switching, and system operation.
Switch — Rear Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | DANTE Port | Dante network port — connect to a network switch with other Dante devices. Supports both Dante audio receive and transmit. |
| 2 | LINE IN Port | Analog audio input (5pin-3.5mm phoenix connector). Balanced/unbalanced, max 2Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 3 | LINE OUT Port | Analog audio output (5pin-3.5mm phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 4 | IR IN Port | Connect the IR receiver cable — used for IR signal pass-through or controlling this product via IR remote. IR blaster pin 1: +, pin 2: −. IR receiver pin 1: IR Signal, pin 2: GND, pin 3: 12V. |
| 5 | IR OUT Port | Connect the IR blaster cable. The IR signal originates from the HDBaseT Receiver IR IN port. |
| 6 | RS-232 Port | RS-232 serial port with two functions: (1) RS-232 signal pass-through or control of external devices; (2) Valens firmware and hotkey function firmware update (switchable via API commands). |
| 7 | RS-232 CTL Port | RS-232 serial port for API command control and MCU update. Default baud rate: 115200 (8N1). TCP/IP port: 8000. |
| 8 | RESET Button | Press and hold for 5 seconds — all front panel LEDs flash at 1Hz. When LEDs stop flashing, unit has been restored to factory default settings. |
| 9 | LAN Port | 1G Ethernet port for TCP/IP and Web GUI. Connect to a router or network switch. Default IP: 192.168.0.100. |
| 10 | DC 24V Port | Connect the included DC 24V/8A power adapter. |
| 11 | USB DEVICES 3/4 Ports | USB 3.2 Gen 1 extension ports supporting 5V/900mA output. |
| 12 | USB-C 1/2 Ports | Multipurpose USB-C ports with four functions: (1) USB-C A/V signal input (DisplayPort Alternate mode, up to 4K@60Hz); (2) USB Host port (USB 3.2 Gen 1 5Gbps); (3) 60W charging to connected device; (4) USB-C network access (1Gbps Ethernet passthrough). |
| 13 | HOST 3/4 Ports | USB Host ports supporting USB 3.2 Gen 1 5Gbps. Connect to PC host for KVM functionality. |
| 14 | IN 3/4 Ports (HDMI) | HDMI signal input ports — connect to HDMI source devices (DVD, Blu-ray, PC) with HDMI cable. |
| 15 | OUT 1/2 Ports (HDMI) | HDMI signal output ports — connect to HDMI display devices (TV, monitor) with HDMI cable. |
| 16 | HDBT 2 Port | HDBaseT output port — connect to the HDBaseT IN port of the receiver with a CAT6A (F/FTP) cable. Supports PoE PSE to power the receiver. |
| 17 | Link Signal Indicator (Green) | On: Transmitter and Receiver connected and linked. Flashing: Link abnormal. Off: Not linked. |
| 18 | Data Signal Indicator (Yellow) | On: Video signal input with HDCP. Flashing: Video signal without HDCP. Off: No video signal. |
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch offers comprehensive connectivity for video, audio, USB, LAN, IR, and RS-232 integration.
HDBaseT Receiver Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED (Red) | On when the receiver is powered on. |
| 2 | LINK LED (Green) | On: Good connection to transmitter. Flashing: Poor connection. Off: Not connected. |
| 3 | VIDEO LED (Green) | On: Video signal with HDCP. Flashing: Video signal without HDCP. Off: No video signal. |
| 4 | HDBT LED (Green) | On when the HDBaseT IN port is selected as the signal input channel. |
| 5 | HDMI LED (Green) | On when the HDMI IN port is selected as the signal input channel. |
| 6 | SELECT Button | Press to select the signal input channel (toggles between HDBaseT IN and HDMI IN). |
| 7 | IR IN Port | Connect the IR receiver cable — IR signal will be sent to the IR OUT port of the transmitter. |
| 8 | IR OUT Port | Connect the IR blaster cable — IR signal originates from the IR IN port of the transmitter. |
| 9 | DEVICES Ports (1/2) | USB 2.0 extension ports supporting 5V/500mA output. Connect whiteboard, mouse, keyboard, USB camera or other USB devices. |
| 10 | SERVICE Port | Micro USB port for firmware update. |
| 11 | HDBaseT IN Port | HDBaseT input port — connect to the HDBT 2 port of the transmitter with a CAT6A (F/FTP) cable. Supports PoE PD (can power the receiver). |
| 12 | Data Signal Indicator (Yellow) | On: Video signal with HDCP. Flashing: Video without HDCP. Off: No video signal. |
| 13 | Link Signal Indicator (Green) | On: Transmitter and Receiver linked. Flashing: Link abnormal. Off: Not linked. |
| 14 | HDMI IN Port | HDMI signal input — connect to HDMI source device with HDMI cable. |
| 15 | HOST Port | USB Host port supporting USB 2.0. Connect to PC for USB KVM over HDBaseT. |
| 16 | HDMI OUT Port | HDMI signal output — connect to HDMI display device (TV, monitor) with HDMI cable. |
| 17 | LINE OUT Port | Analog audio output (5pin-3.5mm phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 18 | RS-232 Port | RS-232 serial port for RS-232 signal pass-through or controlling external devices. |
| 19 | DC 24V Port | Connect the DC 24V power adapter. Note: The receiver can also be powered by PoE through the HDBaseT IN port. |
When paired with its receiver, the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports long-distance 4K video, USB, audio, control, and PoE transmission.
IR Remote Control
| Button / Group | Function |
|---|---|
| Power | Press to power on the switch or set it to standby mode. |
| OUT 1 — USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 | Select input source for OUT 1 in single screen display mode. Corresponding input LED lights green. |
| OUT 1 — Multiview (⊞) | Short press to cycle through multiview modes: Single → PIP → PBP → Triple → Quad. |
| OUT 1 — ◄ / ► | Cycle to previous or next input source for OUT 1 in single screen mode. |
| OUT 1 — AUTO | Enable/disable auto switching for OUT 1. |
| OUT 1 — RES. | Cycle through output resolution options for OUT 1. |
| OUT 1 — MUTE | Mute/unmute audio of OUT 1. |
| OUT 1 — VOL− / VOL+ | Decrease/increase audio output volume of OUT 1. |
| OUT 2 buttons | Same set of controls as OUT 1, applied to OUT 2 / HDMI/HDBT Out 2. |
| RX HDBT | Select the HDBaseT IN port as the signal source input channel of the receiver. |
| RX HDMI | Select the HDMI IN port as the signal source input channel of the receiver. |
| PRESET | Cycle through preset application scenes. |
The included remote enables convenient operation of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch from within the installation environment.
IR Cable Pin Assignment
The pin assignment of the IR Receiver cable and IR Blaster cable is as below:
Multiview Display Modes
The presentation switch supports the following multiview display modes, selectable via Web GUI, IR remote, or RS-232 commands:
Auto — recalls the multiview display mode set in Web GUI automatically.
Single — single screen display.
PBP — dual screen side by side: Dual-LR or Dual-TB.
PIP — picture-in-picture: PIP-LT, PIP-LB, PIP-RT, PIP-RB.
Triple — triple screen: Triple-L, Triple-R, Triple-T, Triple-B.
Quad — quad screen: Quad-L, Quad-R, Quad-T, Quad-B, Quad-S.
Copy Output — copies the display mode of the other output port.
Custom — five user-customised window layouts (Custom 1–5) with free window size, position and source assignment.
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides multiple display layouts for meetings, classrooms, training facilities, and collaborative presentations.
Keyboard & Mouse Hotkeys
Keyboard hotkeys (use Scroll Lock×2 or Ctrl×2 as the prefix):
Switch OUT 1 to input 1–4: prefix + 1 + [1/2/3/4]
Switch OUT 2 to input 1–4: prefix + 2 + [1/2/3/4]
Switch OUT 1 to next/previous input: prefix + 1 + Page Up / Page Down
Switch OUT 2 to next/previous input: prefix + 2 + Page Up / Page Down
Enable/Disable buzzer: prefix + F12
Note: Do not use the numeric keypad on the right of the keyboard.
Mouse hotkeys:
Double-click scroll wheel then right-click: Switch OUT 1 to next input.
Double-click scroll wheel then left-click: Switch OUT 2 to next input.
USB KVM functionality allows the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch to simplify computer control across connected sources and displays.
Web GUI
Default IP address: 192.168.0.100. Connect the LAN port to a PC on the same network segment and enter the IP in a browser. Default login credentials: Admin / 1234 and User / 1234. The Web GUI provides the following pages: Information, Preset (up to 8 scenes), Input (EDID/HDCP per port), Output (scaling/HDCP/on-off per output), Video (window layout, multiview, freeze, AV mute), Audio (matrix, input/output gain, GEQ, delay, Dante routing), USB (follow video / manual / auto switch), RS-232, Network, and System (auto switch, display control, CEC, fan, firmware update).
The Web GUI of the ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch provides centralized control of video, audio, USB, EDID, presets, and network settings.
RS-232 Control
Connect the RS-232 CTL port to a PC using a 3pin-3.5mm phoenix connector cable and an RS-232 to USB cable. Default baud rate: 115200 (8N1). TCP/IP port: 8000. Full ASCII command set covers system settings, input/output control, video layout, audio matrix, USB switching, CEC, preset recall, and network configuration. Send the command "help" to retrieve the full command list.
The ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch supports professional automation through RS-232 commands, TCP/IP control, presets, and external device management.
ST-NPSB42H70 4x2 4K60 Seamless Presentation Switch Application Example
| Dimensions | 10 x 8 x 5 cm |
| Weight | 500g |
| Material | Premium aluminum alloy |
| Color | Black, Silver, Gold |
| Warranty | 2 years manufacturer warranty |