solution
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1, there may be a short circuit, remove the battery to see if there is water inside, or if there is something else to link the power line together, you can use a hair dryer to blow.
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2, there may be a problem with the circuit inside the bell, there are several reasons for this, may be the weather, may be man-made. If you do not understand, or find someone to take a look at it is better. In addition, before there is no maintenance, if the doorbell is noisy, temporarily put the doorbell battery down.
The reasons for the alarm after the smart doorbell is plugged in are as follows
Line fault: Detect whether the wiring is normal, whether the middle of the line is broken, loose, etc.
Signal and power failure: Please use a multimeter to detect the wiring ports of each alarm detector to see if there is a normal control signal and power input, and the control signal and power supply must comply with the instruction manual of the alarm device.
If the detection device is damaged or the extension is damaged, please replace the product with the same model and function