Chuông Cửa Không Dây Thông Minh Kết Nối Wifi 433

The wireless doorbell button is mainly used in pair with the host. When the doorbell button is triggered, the host sends a "BUZZ, BUZZ" full-range wireless transmission, and the wireless transmission distance is 50-80 meters. The shape design is small and beautiful; Battery life is up to 3 years; no replacement is required; Transmission frequency 433.9 Working voltage: 3V (CR2032) Quiescent current: 0 Transmit Code Protocol: 1527 Protocol Single weight: 10g Product size: 55*30*10 mm colour:white Material:Metal + plastic Package Contents: 1 * Smart Door Detector 1 * English ManualOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.