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Module uses genuine high quality relay, normally open interface maximum load: AC 250V / 10A, DC 30V / 10A Using optocoupler chip isolation, strong

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Channel difference is small, more accurate, 0.1V resolution accuracy. There are three versions of 5V / 12V / 24V optional. Input a voltage compared with the reference voltage (reference voltage through precision multi-turn potentiometer partial pressure get),the input voltage is greater than the reference voltage, the relay pull, the circuit connected, at the same time the work of the corresponding channel indicator light.