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The button need to be paired with CallToU receiver then the unit can work.
Trigger simple--Just touch or slip over the button lightly to activate,no matter how big your dog is , they can touch the activator through the nose or claw to activate the doorbell.
Easy installation --Use 3M double-sided tape to stick it on the door or wall,even on a board and then place anywhere you need. and flexibly increase or decrease the receiver and transmitter according to your needs. The matching method is simple and easy to operate.
|Color:||Blue, Purple, White|