5V 1/2/4/8/16 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR
ab 1,19 €
1 CH Without Optocoupler(Black). 1 CH Without Optocoupler(Blue). 1 CH With Optocoupler(Black). 2 CH With Optocoupler(Black). The use of the industry's top quality optocoupler isolation, strong anti-interference ability, stable performance; the trigger current is only 3mA.
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