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This Smart Wireless Doorbell adopts advanced wireless transceiver technology and high-quality sound processing technology. It is suitable for home, villa, shop, hotel, and office, etc. When you press the button, the Doorbell will receive the signal and you will hear the sweet tunes immediately.
When the infrared detects a moving object, it will send a signal to the doorbell, the Wireless Doorbell emits a welcome sound. This mode is usually used in-store to welcome customers. USB cable charging or 2 AAA batteries (not included).
- Receiver Working voltage: AC 100-220V
- Working current: <100mA
- Wireless frequency: 433MHz
- Working temperature: -10 ° C -50 ° C
- Wireless distance: 150 meters (open space)
- Button battery: 1pcs 12V 23A battery(not included)