5V 1 Channel Relay Module With Optocoupler
- The control signal DC or AC, 220V AC load can be controlled.
- There is a normally open and one normally closed contact
A power indicator light. - A control indicator, pull off, disconnect does not shine.
- Transistor drive to increase the relay coil control pins high impedance.
- The control pin has a pulldown circuit to prevent malfunction relay vacant
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