2000M Latched 12V Remote Switch for Alarm and Strobe System

I am searching for a solution to send a wireless signal across roughly 300m. The receiver will be 12v powered. The transmitter will be used turn on with a relay then send a wireless signal to the receiver. The receiver in turn will activate a 12v alarm and strobe system. These need to be sending while in alarm and stop sending when the relay shuts off.

Our suggestion is 2000M RF remote control apply for device control another device (S1L-DC12-ANT2+CB-2N).

The remarkable feature of its transmitter is that its triggering method is connection and disconnection of two wires (Black&Red).

Wiring:

Wires on the transmitter should be connected to the contacts of original device. Here we suggest that you can add a manual switch between two wires to control its connection.

The normally open contacts B&C of receiver should be connected to the alarm and strobe system or siren being controlled. We offer three voltage versions for receiver: 9V, 12V and 24V. You can choose the right one according to the voltage of device being controlled. You can supply 12V power to receiver and your alarm and strobe system respectively.