- DC+: Connect the power-positive pole
- DC-: Connect the power negative pole.
- IN1-IN2: According to the setting of each way, the corresponding relay operating can be controlled by high or low levels.
Relay output:
There is a 4-wire interface, all interfaces can be directly connected to lead to facilitate user use.
- NO1–NO4: Relay normal open, the relay suspends before pulling in, and then short-connect with the COM.
- COM1–COM4: Relay common interface
- NC1–NC4: Relay normal close, short connected with COM before pulling in and suspended after pulling in.
High and low-level trigger options:
- S1-S4 is the high-level trigger selection of relay 1 Channel – 4 Channel.
- When COM is short-connected with LOW, the corresponding relay is a LOW-level trigger, while when COM is short-connected with the high end is a high-level trigger.
Packing List:
1 x 4 Channels 24V Relay Module High and Low Triggering
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