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.
Answer:
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).
This transmitter & receiver set can be used in such a situation when you want to use an electrical device to remotely control another device. It has extensive application range. It controls lights, motors, fans, electrically operated doors/locks/windows/blinds/cars or other appliances with voltage AC110~240V or DC0~28V. You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance (within 2000M open field); the wireless RF signal can pass through walls, floors and doors.
You may wonder how it works with alarm and strobe system. Let’s see the following wiring and operation procedure.
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.
Operation:
As you requirement, we finished all procedure. Move to “ON” position of transmitter’s switch. Then we move manual switch to “ON” position, the contacts of two wires are closed, the transmitter is triggered and then transmits an rf signal “ON” to the receiver. After the receiver receives the signal, contacts B&C are closed; Your alarm and strobe system start to work.
Then we move manual switch to “OFF” position, the contacts of two wires are cut, the transmitter is triggered and then transmits an rf signal “OFF” to the receiver. After the receiver receives the signal, contacts B&C are cut; your alarm and strobe system stop working.
