2. It is recommended to replace 6 new batteries of the same model at a time. If new and old batteries or different batteries are mixed to use, the battery life will be shortened.
How can I distinguish the positive and negative poles of the terminal if I connect to the DC power supply?
If you connect to DC power supply, both terminals can be connected to positive or negative poles.
Is the doorbell waterproof? In which outdoor environments can it be installed?The Video Doorbell G4 is recommended to be installed on a porch or in other shaded areas.
Which format can the customised ringtone be uploaded? How many ringtones can I upload at most?
Only MP3 not larger than 5 Mb can be uploaded, and each device only supports a maximum of five customised ringtones.
Can face recognition be executed locally? Can the doorbell work normally after being disconnected from the router?
The face recognition has two functions of face capture and face matching, both of which are performed locally on the device. However, to display and mark the face, it needs to connect to the cloud server. When the doorbell is disconnected from the router, it will not affect the face capture and matching, nor affect the local execution of automations related to face recognition. However, the newly captured face image after the doorbell disconnected from the router cannot be displayed on the app.
What is the distance and angle of PIR motion detection?
PIR detection sensitivity is divided into high and low levels. When moving horizontally (90° to the PIR detection direction), PIR can detect about 4 meters with high sensitivity, and about 2 meters with low sensitivity. When moving vertically (parallel to the PIR detection direction), the detection distance will be shortened. PIR horizontal detection angle is 120°, and vertical detection angle is 80°