Some common factors for doorbell quality control:
Appearance
Quantity check
Measurement(weight & size)
Basic function test
Assembly check
APP loading test
Battery voltage test
Charging test
Aging test 5H
Chime and bideo doorbell distance check
Intercom distance check
PIR distance check
High/low temperature test
Night mode test
Versions number test
Video recording test
Video recording play test
working current test
Charging current test
Inner check
3M tape test for Logo
Barcode scanning
Carton dropping test
