USB Relay Controllers allow computer controlled switching using the USB port of your computer. An NCD USB Relay Board emulates a COM port, allowing you to speak to the relay board using any programming language that supports serial communications. COM drivers allow you to assign any COM port to the USB Relay Board. Many of our relay boards support 8-Channels of 8-Bit / 10-Bit Analog to Digital Conversion (A/D), and can be expanded to control more relays as your needs grow.
No programming is required with the new Reactor Series, Key Fob Series and Time Activated Relays! No computer is required once the board is configured to your needs either! Our free configuration utility allows you to simply configure the board and your done!
Our USB boards offer your choice of 1, 3, 5, 10, 20 or 30 amp relays and are available in many channel versions with many series supporting Analog to Digital Conversion on Board. Computer Controlled USB Relays feature the ProXR Command Set allowing for a unified API to control all relay controllers. Other Series use a configuration software to let you tell them how and when they should automate relays based on time and/or sensors.