1 Channel High Low Level Trigger Relay12V with Optocoupler Isolation (1S 12V)

Optocoupler Isolation: The high and low level relay module utilizes optocoupler isolation, providing increased stability and preventing interference between the input and output signals. 1 Channel High Or Low Level Trigger DC 12V High Low Level Trigger Relay Switch with Optocoupler Isolation for Arduino.

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