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SoundTeoh DD-123 Wireless Doorbell Features: Wireless design, easy to install, strong anti-interference system. Others: Low power consumption, weatherproof touch sensor transmitter with LED indicator, 5 levels of volume control (higher, high, medium, low and mute)
- Polyphony sound: 52
- Distance Coverage: up to 50m
- Battery: 3 x AA (Not included)