Introduction To How It Works:
The Relay Is At The Heart Of The Module, Equivalent To A Switch With Electromagnetic Control, And The 12V Power Supply End Controls The On-Off Of The Relay
1, 12V Power Supply, Contact Closed, Strong Electric Circuit Power On, The Device Starts To Work.
2, 12V Disconnected, Contact Disconnected, Strong Electric Circuit Power Off, Equipment Stop Working.
Please Connect The Live Wire And Circuit Board
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