Self-powered: No batteries are required for both transmitter (push button) and receiver. With a press of the transmitter, it generates electric power itself and sends a stable signal to the receiver.
Modern and Practical Design: Comes with a stylish appearance and practical functions. Lightweight and sensitive.
Easy to install: Just plug the receiver into a power socket and attach the transmitter to the door, you don't even have to make holes.
38 Ringtones and 4 adjustable volume levels (including silent mode) to choose from.
