1080P HD Wifi Wireless Home Visual Smart Video Doorbell

 M21 1080P HD Wifi Wireless Home Visual Smart Video Doorbell Wifi smart wireless security doorbell know people with insight,keep abreast of changes outside the door, Anytime,anywhere,you want to seeit,regardless of travel,work,business trips,traffic lights,etc. you can turn on the monitoring doorbell any time and any where to understnad all the dynamics at the door.   FUNCATION *Monitoring *Low power *Picture snapping *Intercom *Video recording *Phone App remote control *Memory card or Cloud storage *Support wifi *Night Vision *1080P SPECIFICATION *Model:M21 *Product name:Wireless Smart Video Doorbell *Material:ABS Plastic *Motion detection:Support PIR *Battery:2 x 18650 Batteries(not include) *Two-way intercom:Support full-duplex real-time call *Cloud storage:optional 7days loop permanent free cloud storage *Working temperature: -10°C ~+50°C *Working humidity: ≤80%RH *CCD:1080P scan CMOS sensor *APP:Support *Infrared distance: 850nm infrared, effective distance 5m *Night vision:6p