- Communication Interface:Wireless
- Display:None
- Alarm:No
- Itercom:No
- Feature:None
- Power:Electric Supply
- Item Type:Wireless Doorbell
- working frequency:433mhz
- Receiving distance:300M Remote (in open area)
- Power supply:110V-220V-240V
- Ring tone:38 ring tones
- Use of premises:Home office villa hospital school factory
- Battery mode:12v 23A battery (not include battery)
Feature 1: Anti-interference will not appear stringing.
Feature 2: Receiver Smart Flash
Feature 3: Receive signals over long distances.
Feature 4: Adjustable volume and music installation is easy to use (default dingdong) 3 volume adjustable 38 music optional
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