MCNET pairs can communicate to each other from anywhere in the world using an internet connection. No Static IP Address is required. Simply plug the Ethernet and Power Cords in and give them a few minutes to find each other. After you wire the controlled devices in, you can control billboard lights in India, Runway Lights at an Airport, or simply lock your front door from the office.

Learn more about the Range of MCNET


MCNET Series Boards have two different modes that you can choose from, Smart Mode and Beacon Mode. Each has its own methods of how they send data and how they react to communication loss.

Smart Mode:

Smart Mode is the faster and lower energy option of the two. A board in Smart Mode only sends data to the paired device when a contact closure is detected. If communications are lost in Smart Mode all relays will turn off after a period of 30 seconds.

Beacon Mode:

A board in Beacon Mode constantly sends data to the paired device and waits for a change in the data being sent to it to change. If communications are lost the status of all relays will remain the same until communications are reestablished.

Learn more about the Modes of MCNET


MCNET devices are only sold as a permanently married pair, pricing shown on our web site indicates pricing for the pair of controllers. Contact Closure Inputs may only be connected to switches, buttons, or sensors with Contact Closure capability. Not suitable for use in voltage detection applications. MCNET devices use Network Communications to ensure the remote device is properly functioning. The Busy LED is always used to indicate a properly functioning remote device. If you do not see the Busy LED flash, then the MirC controller is unable to communicate to the remote device. A flashing busy LED is your verification that all communications are functioning properly between MXNET controllers.

Inductive loads can lead to dropped communications between the two Devices. Customers who require inductive switching (such as motors, lights, pumps, solenoids, and Transformers) should visit the Induction Suppression portion of our web site.

Product Variations: MirC and MirX Series Controllers

NCD Currently offers 2 variations of this design: MirC and MirX.

MirC: Transmitter Controller and Receiver Controller. The Transmitter Shows the Status of Relays on Receiver Controller. The Transmitter is equipped with Contact Closure Inputs and Remote Relay Status LEDs. The Receiver is equipped with Relays and Relay Status LEDs.

MirX: Each Controller is a Transmitter and a Receiver. The Inputs on One Controller control the Relays on the Opposite Controller. Relay Status is Shown using LEDs on Each controller.

MirC controllers include two circuit boards. The "Local" and "Remote" circuit boards work together to control relays at the remote location from the controller in the Local location. The Local Circuit board has contact closure inputs. When an input change is detected on the Local circuit board, the relay is changed on the Remote circuit board. The Remote Circuit board sends feedback to the Local controller. The LEDs on the Local controller display the status of the relays in the Remote location based on 2-way communications. If communications is lost between the devices, the Remote relay will turn off (If set to Smart Mode). The relay status LED on the Local controller will also turn off. The Remote relay controller is also equipped with LEDs to show the status of the relays. Relay status can be seen on BOTH controllers.

MirX controllers also include two circuit boards. Each controller is a Transmitter and a Receiver, each controller is equipped with contact closure inputs and relays. The local contact closure inputs control the relays at the remote location and vice versa. The LEDs on each controller display the status of the relays ONLY.

Learn more about the difference between MirX and MirC

Attention: No Voltage Input

Please Note: Users must NEVER apply any voltage to an input on the Mir-C controller, these inputs are for Contact Closure connections only.