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Specification:
- DC +: the positive supply (voltage relay according to the requirements)
- DC-: negative one
- IN: can be high or low level relay control
Relay output:
- NO: normally open relay interfaces, floating suction before closing the relay, after the short circuit is absorbed and COM
- COM: Common Interface Relays
- NC: normally closed relay interfaces, COM and close the front relay short circuit, the pull vacant
High and low end trigger selection:
- LOW when the shorting jumper is level-triggered;
- to trigger high and high jumper shorted.
