Detailed Product Description

1.Open the doorbells battery cover when using.And install three NO.5 AA sized alkaline batteries.(It will damage the battery clip to ulictze the common batteries for easily seeping the electrolyte.That causes thebatterieslives to be shortened.) The electricity losses are extremely low. The alkaline batteries can be used for one year. (Counting it by twenty times a day) .

2.The button is assembled in the appropriate position at the gate and you connect the wire for the operations immediately, (The cord cant be parelleled with the the electric fire line or assembled into the same wire groove to avaid the mis-touches.

3.After using it for a period of time, please diecard the old batteries for its innormal operation.