Doorbell Transmission: Wireless
Range: 15~20 Meters
Bird Call Chime
6 Seconds Recorded Chime
Sound Output: 2W
Strong anti-interference wireless transmission
Power Source: Transmitter- 1xAAA Battery Receiver- 3xAA Batteries
Dimension: Transmitter- 75x43x22mm (LxWxD) Receiver- 260x195x95mm (LxWxD)