Our USB interface module makes relay control effortless. Just plug it into any available USB port and start controlling relays
or reading A/D inputs with simple serial commands. Every NCD USB module uses a genuine FTDI USB-to-Serial converter
chips - the industry standard for speed, stability, and compatibility.
Communicate with the board through a virtual COM port, making software integration straightforward across
nearly any programming environment.
The ProXR Command Set
The R220PL_USB uses the ProXR Command Set for simple yet powerful control. Send basic
commands to turn relays on or off, or take advantage of advanced features like delays, flashers,
duration timers, and full relay-status feedback. From quick automation scripts to full system integrations,
ProXR commands deliver a proven, reliable command set trusted across the industry.
