XH-M128 2 way relay switch module intelligent cycle control 2 way key switch multi function key selection

XH-M128 2-way relay switch module intelligent cycle control 2-way button switch multi-function button selection Light Description: Red for the power indicator, the other two correspond to two relays, when the corresponding relay is closed Key description: S1: corresponds to the first relay, the power is turned on, the relay is fully closed. Press S1 once off, press again to close, Trigger process on → off → on → off ? S2: corresponding to the second relay, the relay is fully closed after power on, press S2 once closed, press again to close, Trigger process on → off → on → off ? S3: cycle switch, the relay is fully closed after power, according to S1 pull, then press S2 pull, and then turn off, so cycle Trigger process is: all off → J1 open → J2 open → all closed → J1 open → J2 open → closed Terminal Lead Description: Red 2 lines for the power supply 12V, AC and DC can be, regardless of positive and negative Blue control relay No. 1, yellow control relay No. 2, the middle black for the public end, the same function and S1S2, White 2 for cycle control, the same function and S3 Note: The output terminal is isolated, you can control any voltage, understand the electronic look understand, do not know no way