5V 12V 4/8way Relay Board Onboard ESP8266 module with Optocoupler Isolation
ab 10,17 €
Optocoupler isolation, good anti-interference. This suction, release, so as to achieve the purpose of conduction in the circuit, cut off. Neutral relay single load current does not exceed 2A, songle relay single load does not exceed 10A.
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