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Question:

Access control system is broken, how to repair ah? The The The Switch will be good after the change.

Access control system is broken, how to repair ah? The The The Switch will be good after the change.

Answer:

It is possible that the switch is broken. With a multimeter about the two out of the switch contact has been short-circuit. If you do not press the switch in the case of short circuit, then the door switch is broken. another
It is estimated that the line short circuit, with the universal test, 2 may be the controller is broken
where is it? We can get here

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