4 Channel RS232 Relay

Serial Relay  RS-232 Relay Board

Conveniently Small Size

Our Quad RS232 Relay Controller offers a conveniently small size with the integrated power of our standardized PRO relay command set. 4 Channel Relay Controllers are ideal for computer control applications where small size and high functionality are required.  We offer a large selection of Four Relay Drivers for applications ranging from low power signal switching to high voltage, high current applications.

RS232 Switching with a Serial Port

RS232 Relay or Serial Relay Controllers allow computer controlled switching using the Serial port of your computer.  Select NCD Serial Relay Drivers support 8-Channels of 8-Bit / 10-Bit Analog to Digital Conversion (A/D), and include an XR Relay Expansion Port for adding additional relays to the RS232 Relay Controller Board.

Supports any COM Port

An RS232 Relay supports any available COM port at any standard baud rate, allowing easy integration into any program that support serial communications. The RS232 Relay is ideally suited for applications that require data collection and control from a single device. Built-in temperature sensor allows temperature monitoring, analog to digital conversion, and relay control from a single device. RS-232 interface supports baud rates up to 115.2K Baud.

Easy Connection with the Quick Start Kit

The video shows how easy it is to connect an RS232 Relay to the computer with the optional Quick Start Kit.  The R45Pro Quad Relay Controller is shown connected to the optional QS12 Quick Start Kit.

4-Channel RS-232 Relay Controllers

ADR410PROXR

RS-232 Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D

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$134.00

ADR45PROXR

RS-232 Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D

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$124.00

ADR810PROXR

RS-232 Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D

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$184.00

ADSSR4xPROXR

RS-232 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D

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$124.00

ADSSR4xPROXR_MIX

RS-232 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D

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$124.00

R410PRO

RS-232 4-Channel SPDT Relay Controller Board with 10 Amp Relays

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$109.00

R41DPDT

Quad 1-Amp DPDT Small Signal Relay Controller Board

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$89.00

R41DPDTCN

4-Channel 1-Amp DPDT RS-232 Relay Controller with Relay Interface

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$99.00

R41DPDTCNRS

4-Channel 1-Amp DPDT Relay Controller with RS-232 and Relay Interface

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$109.00

R420

Quad 20-Amp SPDT High-Power Relay Controller Board

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$149.00

R430

Quad 30-Amp SPST High-Power Relay Controller Board

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$169.00

R43DPDT

Quad 3-Amp DPDT Signal Relay Controller Board

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$99.00

R43DPDTCN

4-Channel 3-Amp DPDT RS-232 Relay Controller with Relay Interface

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$109.00

R43DPDTCNRS

4-Channel 3-Amp DPDT Relay Controller with RS-232 and Relay Interface

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$119.00

R45DPDT

Quad 5-Amp DPDT High-Current Signal Relay Controller Board

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$109.00

R45DPDTCN

4-Channel 5-Amp DPDT RS-232 Relay Controller with Relay Interface

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$119.00

R45DPDTCNRS

4-Channel 5-Amp DPDT Relay Controller with RS-232 and Relay Interface

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$129.00

R45PRO

RS-232 4-Channel SPDT Relay Controller Board with 5 Amp Relays

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$99.00