RS232 Relay Switch

RS232 Relay Switch at a Glance...

  • 32 Relays Installed on a Circuit Board
  • RS232 Interface with Choice of Connector
      - Onboard DB9 Connector
      - Screw Terminal Connector
      - Off the Board DB9 Connector
      - Connect to Any Existing COM Port
  • ProXR Versions
      - Industry Leading Command Set
      - Expandable to 256 Relays
  • Industry Leading Command Set
      - Send Specific Commands to Trigger Relays
      - Trigger Any or All Relays
      - Program in Almost any Language
      - Read 0 to 5 Volt Sensors

Selecting The RS-232 Interface

RS232 Relay SwitchBy selecting the RS-232 interface you will be sending commands to the board through either a DB9 or direct wire interface.  Boards on this page are equipped with a ZRS communications module that adds RS-232 communications to the board.  At checkout you will have three modules to choose from with either a DB9 or direct (3-wire) connection.  A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes.  Once the command has been received, the controller processes the command and the relay activates.

Selecting a Board

Below you will find the 32-channel RS232 Relay Switches that are available.  The difference being the amperage of the relays installed and the type of relay.  Choose the controller that fits the amperage you are switching.  You will find SPDT relays in the 5, 10 and 20 amp versions and an SPST version in 30 amp.  DPDT versions are also available with 1, 3 or 5 amp relays installed.  For more information on selecting the correct relay for your application see Choosing a Proper Amperage.

Selecting a Series

The 32-Channel boards are available in the ProXR versions. The boards have firmware installed and accept the ProXR command set.  The ProXR Command Set is the industry leading command set for controlling relays.  All ProXR controllers are expandable to 256 relays.  When you find your controller click on the Full Description link to view full specs, watch setup videos, download software and purchase.