Motion Detector Doorbell Night Light Alarm System

3 operation modes; welcome bell; alarm; induction light; 3 in 1 design; this motion sensor can adapt to daytime; anti-theft or night lighting 4-level volume adjustment; the motion sensor can be adjusted to a suitable volume according to the environment; it will not be inaudible or harsh 3 power sources; AAA batteries; rechargeable Ni-MH batteries; avoid the trouble of frequent battery replacement 6 meters visible distance; infrared motion sensor is very sensitive; if someone enters the detection area, you can know immediately Size 9x8.5cm Note: Due to manual measurement, please understand that there are errors in the data. Thank you for your understanding. Package Contents: 1 piece