Description: Double design, using a dedicated two-way driver IC design. Anti-interference ability, the use of diode freewheeling protection. Relay contact part of the use of double-sided thick wiring, for large current through, safe and reliable. Input can be arbitrarily set high and low , control more flexible. Each relay has a suction indicator, the working status of the relay at a glance. Each relay output are led to normally open and normally closed two groups of electric shock, easy to use and flexible. With fixed screw holes, easy to install. Specification: Material : Metal, Plastic, Eletric Parts Size(LxWxH): Approx. 133x55x19mm/5.24x2.16x0.75inch Color: Red Relay Contact Capacity: AC250V 10A DC30V 10A Package Includes: 1 piece Relay Module Board 1 piece Remote Cotrol Note: Remote control to be equipped with more than 5V voltage, or remote control can not work well with replay module board. The product wiring is as follows: VCC: Input power supply terminal GND: Input power supply terminal ground CTR1-CTR8 for the signal input side, any way effective (through the jumper can be set) Remote control use: only the number keys work, 1-8 button, corresponding to the corresponding relay 1-8 channel, when pressed once the relay work, press again. Due to the difference in the measurement , pls allow an error of 1 to 3mm.