3PCS 4ch 3.3V 5V 12V Digital Logic Level Conversion Module PNP/NPN to NPNOptical Isolation Board for PLC Relay LED

3PCS 4ch 3.3V 5V 12V Digital Logic Level Conversion Module PNP/NPN to NPNOptical Isolation Board for PLC Relay LED
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sku: 1005005944279976
$6.77
Shipping from: China
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