Patpet B801, User Manual, Page: 10 / 19

Test method:Press and hold the power button to turn on the bark control
collar. Then make a sound similar to "woof, woof" towards the sensor, and
at the same time, vibrate the device.
The product may be only triggered by both sound and vibration. If the
product cannot be triggered, please try several times to correctly simulate
the scene of dog barking.