Smart Wireless WiFi Doorbell Security Camera Intercom Visual Bell Chime US
No more card formatting or data lost within specific period. Stable and fluent connection and it will not break off. Wireless Doorbell with Bracket Size: 4.2x7.6x2.2cm/1.65x2.99x0.86in. Wireless Doorbell with Bracket Weight: 51g/0.11lbs.