4PCS Channel Relay Optocoupler Isolation Module Red Board 3-5 V High And 0-1.5V Low Triggered Load Level Control

4PCS Channel Relay Optocoupler Isolation Module Red Board 3-5 V High And 0-1.5V Low Triggered Load Level Control
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sku: 1005006567743395
$4.49
Shipping from: China
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