1.The entire module layout is reasonable and beautiful. High-power relays to control the load up to 30A. 2.Each channel has optocoupler isolation, strong anti-interference ability. 3.Using SMD optocoupler isolation, driving ability, stable performance;the interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient. 4.In accordance with standards, the control area and the load area have isolation slots. 5.Applied to PLC automation equipment control, industrial system control, Internet of things control, furniture intelligent control. Product Name: High and Low Level Trigger Relay Module Trigger Mode: Low Trigger; High Trigger Load Current: 30A Relay Life: More than 100,000 Times Supply voltage: 5V Colour:Green+blue Material: PCB Size: 9 x 7 x 4CM Package Contents: 1 x Relay Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.