4CH 3.3V 5V 12V Digital logic level conversion module in PNP/NPN out NPN OUT Optical Isolation Board For PLC Relay LED

4CH 3.3V 5V 12V Digital logic level conversion module in PNP/NPN out NPN OUT Optical Isolation Board For PLC Relay LED
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sku: 1005005342675786
$3.45
Shipping from: China
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