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one hole is big size
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Elasitc Fiber
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1pcs Refill
1 Channel AC 220V optocoupler isolation module high voltage opto isolator Re Pens & Writing Equipment one hole is big sizeITEM NAME: 1 Channel AC 220V optocoupler isolation module high voltage opto isolator Re Description: Output TTL level can be detected with the microcontroller. The power supply can be 3 5V Can also access PLC24V level Then the PLC input terminal of the PLC COM power supply 24V input termination of the board signal output OUT, optocoupler board GND power negative Blue 2P 5. 0 terminal connected to 220V voltage 3P terminal connected to the