1.This product is suitable for home,hotel,hospital
2.Sound category: Single Dingdong, Double Dingdong,West minister,12 songs,
3.Sender use 1PCS 23 A 12V battery, receiver use 2Pcs AA batteries;
4.Frequency:433.92MHz;
5.Remote control distance: about 30M;
6.Use digital code
7.sender waterproof
Long distance remote control, convenient for life