1.This product is suitable for home,hotel,hospital 2.Sound category: Single Dingdong, Double Dingdong,West minister,12 songs,3.Sender use 1PCS 6F22 9V battery, receiver use 2Pcs AA batteries;4.Frequency:433.92MHz; 5.Remote control distance: about 30M; 6.Use digital code
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Description
