Waterproof Wireless Door Bells 1000ft Long Range Battery Home Cordless Doorbell~
1 x Wireless Doorbell With 1 Receivers. - or 1 x Wireless Doorbell With 2 Receivers. - Expandable and DIY pairing. Each push button transmitter can pair 1 or 2 receivers. Battery in Receiver:3 AAA batteries ( not Included).