Here is only a RF transmitter, without the receiver.
It can work with most of receivers which is 433MHz frequency.
The receiver must be have a learning button to pair, and must be compatible with IC chip 1527/2240.
Modulation Mode: ASK(AM)
Distance: 10-100m(Depends on your space)
Working Voltage: DC 12V
Working Current: 12mA
Transmitting Power: 10mw
Working Temperature: -10° ~ +70°
Power Supply: 1 * 23A 12V Battery
1 * Transmitter
1 * 23A 12V Battery (Free Gift)