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Module description: 1 The module adopts real quality relay, the maximum load of the usually open interface: AC 250V/10A, DC 30V/10A; 2 Using double optocoupler isolation, stable power capability, secure performance; trigger recent 5mA; three Each channel of the module can be caused by jumper excessive or low level; four Fault-tolerant design, even though the control line is broken, the relay won't move; five Power indicator (green), 1 relay popularity alerts (red) 6 User-friendly interface design, all interfaces would be immediately linked in the course of the wiring terminals, very convenient Module interface: 1 DC+: Connect to the nice pole of the ability supply (voltage is relay 5V) 2 DC-: Connect to the unfavorable pole of the ability delivery three : The relay could be managed by high or low point Relay output: 1 NO: Relay normally open interface, before the relay is vacant, will probably be shorted to COM after picking up 2 COM: Relay Common Interface 3 NC: Normally closed relay interface Before the relay is closed, it is short-circuited with COM High and low level set off selection: 1 S1 is the excessive and coffee level trigger number of relay 1; 2 When com is shorted to low, the corresponding relay is a low level trigger When com is shorted to high, it's a excessive level set off Note: 1 to different video display and light effect, the actual colour of the item is probably barely diverse from the color which is confirmed at the photographs 2 forgive 1 cm/0"-3 cm/1" measuring deviation thanks to manual size