- With the alarm, guest switch, you can choose antitheft alarm or welcoming guest condition
- Chime Doorbell is suitable for house, office, shops, hotel, tire building and factory, etc.
- Probing range: 6-10 m
- Mounting height: 2 m
- Survey horizontal angle 84°
- Alarm sound: 75-95dB
- Powered by 3 AAA batteries, or DC external adapter (not included)
1* alarm doorbel