Check our Product Comparison Matrix if you are unsure of which of our microcontroller based boards has the combination of relays, digital inputs and outputs, and analog inputs and outputs that you need.
RC51 8 Relay Programmable Relay Controller
Add USB connectivity to your RC51 for just $10 more with the USBCONV.
The Industrologic RC51 relay controller is a specialized single board computer that is easy to program and easy to connect to external signals. With its eight 10 amp relays, four logic level I/O signals, and serial port, it is ideal for many relay intensive industrial control applications, and can perform most of the functions of a PLC.
The RC51's on-board power supply and its screw terminal connections make the setup for many applications both quick and simple. Plus, its RS-232 interface and simple commands means that it can be easily used as an RS232 relay board.
Included with each RC51 is a special version of Tiny Machine Basic (written specifically for the I/O on the RC51), development software, a wall block power supply, and a serial port cable to connect to your PC. (Things you must purchase separately with everyone else's controller or single board computer.) An optional machined ABS plastic enclosure is also available.
RC51 documents and information: