KNACRO DC 5V 3-Channel Interlock Switch Self-Locking Relay Module High and Low Trigger Module Load AC 250V DC 30V 10A for PLC Mechanical Automation arduino

Trigger voltage: low 0-2.5V, high default 3.5V-5V (If the voltage is 12V trigger, you need to connect a resistor in order to trigger a 5.1-6.8k; 12V voltage trigger, you need to connect a 15-22K the resistance in order to trigger, otherwise it will damage the chip). Supply voltage: DC12V. Working current: 1 Road: 69 mA; 2-way: 119 mA; 3-way: 161 mA; 4-way: 207 mA Load: AC 250V 10A or DC 30V 10A Module interface: power input: 1.DC +: positive power supply module, and relays to the same voltage; 2.DC-: negative power supply module Trigger group: 1.CH1-CH3: 1-3 corresponds to the starting relay control terminal, support high or low trigger; 2.TRV +: positive power supply external trigger, if you want to trigger an external power supply, the line between RTV + and VCC to unplug; 3.TRV-: external trigger negative power supply, if you want to trigger an external power supply, and GND line RTV- to unplug; 4.3 micro switch: relay test button corresponding to 1-3, when the low level trigger effective; 5.High / Low trigger selection: When connecting M and L, low trigger effective; COM terminal is connected with the H, high level trigger is valid. Relay outputs: 1.NO1-NO3: normally open relay interfaces, relay before hanging, pull back with COM 2.COM1-COM3: Common Interface Relay 3.NC1-NC3: normally closed relay interfaces, relay before with COM, after pull vacant. Feedback: We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help. Our aim is to provide Top Level Customer Service, so we will try our best to solve any problem.Thank you very much!