1. Product Name:wireless door bell
2. Receiver voltage: 110-220V
3. Material: ABS + Electronics
4. Weight: 160g
5. Color: gray blue
6. Size: Transmitter size 77*46*20mm, receiver size 95*65*33mm
7. Remote control distance: open space straight line 300m
8. Product Features:
1) Waterproof design to effectively extend product life
2) Digital circuit design, no stringing, no mistakes