One-Way Remote Switching


The Mir-C Remote Relay Switches are ready to go to work right out of the box. Just Simple, Reliable Communications between two devices. Simply connect a Contact Closure input and the relay on the remote board will trigger!

  • Sold in Pairs
  • Sender Device Controls Receiver Device
    • Contact Closure Inputs on Sender
    • Relay Outputs on Receiver
  • Wired Operation Up to 1000′
    • Using 3-Wire Cable
  • Wireless Operation up to 2 Miles
    • Line of Sight Operation
  • Internet Operation Unlimited
    • Will Find Each Other with Internet Connection
  • No Computer, No Programming, No Set-Up
  • Works Together Right Out of the Box!

MirC Switching

To put it simply, flipping a switch on one board activates a relay on another.

MirC Remote Relay Switches are equipped with firmware built into the board that will allow contact closure inputs to control contact closure outputs in a remote location. The sending device is equipped with contact closure inputs, used to control relays on the remote device. The sender and Receiver controllers are a permanently married pair and are both included when you purchase a MirC.

Why Choose NCD?

With NCD you know you have a proven reliable, easy to use, and extensible product because we’ve been in the business for over 20 years. This means you don’t have to spend valuable time researching how to jig-saw pieces of your project together to get them to work cohesively. Being manufactured in the U.S.A. you know you’ll get good support and a quality product. NCD also ensures you won’t have to put any time into soldering or building a PCB, just pick your boards and power them up. Knowing that every sensor, relay controller, and component is built around the same concept will save you guess work on how well software will work with any board.

How It Works

MirC Remote Relay Switches are really two boards that allow contact closure inputs on the first board to control relay outputs on a second board. The sending device is equipped with contact closure inputs, the receiving device is where the relays are. Both sender and relay devices are included when you purchase a MirC pair. Contact closures are read on one controller, data is sent to the other controller to turn on or off relays, the remote device executes the command sent to it and replies back, busy light flashes to confirm data was received at the other end.

Communication Options

Selecting a Communication Technology

The Communication Technology you choose will dictate installation requirements. Wireless Remote Switching is the easiest to install, but you must make sure the devices are close enough for a clear signal. Wired Remote Switching can be used to communicate up to 1000 feet and has all of the inherent reliability of direct wired solutions. Ethernet Remote Switching allows the device to use a network or internet connection to find each other anywhere in the world and communicate.

The choice is yours and can change to suit your application.

Wireless Remote Switching

Wireless Remote Switching may be the easiest option as it only requires 12 volts of power at the install locations and be within wireless range of each other. When it comes to the wireless range you should remember that the range we list is a line of sight range. A 1 mile range line of site can be cut down to a few hundred feet with a thick wall between them. 

See all Wireless Remote Switches

Wired Remote Switching

Wired Remote Switches are inherently more reliable than their counterparts and are ideal for applications where wireless communications are restricted (airports, military bases, etc.). The devices can be up to 1000 feet away from each other (further if you implement signal boosters).

See all Wired Remote Switches

Network Remote Switching

Network Remote Switching allows for simple LAN or WAN remote relay switching. Simply connect the boards to the same network or to different networks with internet access and they will find each other automatically. Once they’ve found each other they will work as if directly wired.

See all Network Remote Switches