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Hall Research VSA-31-SP-W 3-input A/V Switcher (Split Version - White Wallplate)

The VSA-31-SP-W Mini-Cat is a 3 input A/V Switcher split with the users controls on a 2-gang wallplate, AV inputs on a 4-gang wallplate transmitter and remote receiver.

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Key Features


3 .lbs


Hall Research

Part No:




Designed to add high-end A/V capabilities to any classroom or conference room, the VSA-31-SP integrates A/V switching, microphone input, projector control, video transmission over UTP, and audio amplification in one package.

The VSA-31-SP is comprised of a user interface, configured as a 2-gang wallplate, a transmitter, configured as a 4-gang wallplate, and a small receiver.

The user interface provides individual buttons for controlling the projector power on/off as well as selecting the video source from among 2 PCs or a TV (S-Video / Composite).

The user interface wallplate also features a volume knob for adjusting the audio level independently for each input and the microphone audio level. No power supply is needed for either wallplate since power is supplied via the Cat5 cables from the remote receiver unit.

The unit sends the selected input source to a receiver via 2 Category 5 cables up to 750 feet (230 m) away. The system features a built-in 20 Watt (10 x 2) stereo audio amplifier to drive 4 or 8 Ohm speakers directly. The receiver has a serial output port that connects to the projector and it automatically issues user programmable control commands for power on/off and source selection. The unit also features relay contacts that can control remote items such as lighting or video screens.

The Model VSA-31-SP supports resolutions up to 1920 x 1440 and features automatic long-cable compensation for any length of UTP cable. In addition to its built-in audio amplifier, the remote receiver features line-level audio output for connection to an external audio amp if required.

User interface control panel available as 2-gang wallplate or desktop standalone keypad

Wall plates available in both white or black color

Programmable relay contacts can switch on or off (or toggle) with any button

Accepts 2 VGA and 1 TV-Video (Composite or S-Video) each with its own stereo audio

Accepts microphone input (with phantom power and microphone preamplifier with programmable gain) on XLR or 3 pin header

Selectable volume control and mute button for the AV and Microphone audio

Provides individual buttons for turning the projector on/off, selection of the video source, both volume control and mute selection and a user definable button

Bidirectional RS-232 connection from the control wallplate to the receiver

Sends selected AV to a remote receiver unit via 2 Cat5 Cables

No power supply is needed for the wallplate or connector panel, only at the receiver

Simple UTP (Cat5) cable connections between the wall plates and the receiver

Remote unit can be up to 750ft away and automatically perfects the video

Built-in 20W (10x2) Stereo Amp drives 4 or 8 ohm speakers directly

Automatically controls projector operation (on/off and source selection) via serial commands stored in the unit


Hall Research

Part No:



3 .lbs

Ship Weight:

5 .lbs


Steel Receiver, Aluminum Sender


PC resolutions up to 1920x1440 at 60Hz & HDTV to 1080i, NTSC, PAL, or SECAM S-Video and CV

Storage Temperature

-40 to +185 °F (-40 to +85°C)

Audio Level

Variable Gain. 0 to +4dBu (0.78 to 1.23Vrms) line level with Amplified outputs L + R at 10W per Channel


90,000 hours (Calculated Estimate)

Video Level

Unity Gain. 1V p-p for Y, 0.3 V p-p for C

Maximum Distance

750 ft

DC Voltage

12 Volts

Product Weight

1.1340 kg

Product Weight

2.5 lbs

Dimensions - receiver

1.4 x 3.6 x 6.5 in

Operating Temperature (Maximum)

122 F

Operating Temperature (Maximum)

50 C

Operating Temperature (Minimum)

0 C

Operating Temperature (Minimum)

32 F

Current Draw

2.5 Amps

Dimensions - Sender

4.5 x 8.2 x 1.4 in

Dimensions - User Interface

4.50 x 4.56 x 1.5 in

RS232 Rates Supported

1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600 and 115200 , NONE, ODD or EVEN Parity