Wireless Remote DoorBell Button:
Working Power | Includes Button Batteries (Already includes for your convenient using) |
Wireless Frequency | 433MHz |
Detecting Distant | 50m-70m |
Color | Black & Silver, Looks Tiny & Great~ |
Size | 45mm Diameter Round (It is about the size of the Digoo M1Q lens.) |
Convenient Function | Stick one near your door, when some one press it. |