DC 5V 20 channels Optocoupler isolation Relay Interface Module trigger voltage 1.8v 3.3~9V 10-30V PLC Signal Amplification Board

DC 5V 20 channels Optocoupler isolation Relay Interface Module trigger voltage 1.8v 3.3~9V 10-30V PLC Signal Amplification Board
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sku: 1005005974894421
$41.84
Shipping from: China
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