Product information:
Resolution: 1920*960
Lens: 3.6 (mm)
Signal-to-noise ratio>: 48 (db)
Power supply voltage: 5 (V)
Material: ABS
Use environment: family housing villa rental house personal housing office
Infrared light irradiation distance 5 meters
Specifications: A: standard single machine (white), B: standard single machine (white) + Ding Dong, C: standard single machine (white) + Ding Dong + battery
Packing list：
doorbellx1