Dry Contact Trigger Wireless Switches

These wireless remote control kits include a dry contact transmitter and a receiver with a relay output. They are used to wirelessly control a DC or AC device via a dry contact output signal from another device.
For example, to control the second device by the first device with the dry contact:
First the second device to the receiver's output terminal, then connect the dry contact of the first device to the transmitter’s two trigger wires.
When the first device is activated, and the dry contact is connected, the transmitter will emit a wireless signal "ON". When the receiver receives this wireless signal, it will activate its relay to turn on the second device.
When the first device is disactivated, and the dry contact is disconnected, the transmitter will emit a wireless signal "OFF". When the receiver receives this wireless signal, it will deactivate its relay to turn off the second device.
They can be used for synchronous wireless control of various home, industrial or agricultural equipments, such as wireless control of the warning host and the warning horn, wireless control of the lights, wireless synchronization control of the equipments and so on.