Practical doorbell with wireless external button and easy installation.
Receiver power supply: built-in power outlet. Transmitter battery: 1*12V 23A (included).
Operating range up to 50m.
Frequency: 315MHz + 2MHz.
32 sound options.
Receiver dimensions: 9.5*6.5*3cm.
Button dimensions: 8*4.5*2cm.
Color: white/blue.
