1/2/3/4 Circuit Relay Module with Optocoupler Isolation Is Compatible with 3.3V/5V or 12V TTL Control Signal

1/2/3/4 Circuit Relay Module with Optocoupler Isolation Is Compatible with 3.3V/5V or 12V TTL Control Signal
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sku: 1005005059692348
$6.92
Shipping from: China
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