1. To achieve fast turn-on and off the circuit, an unlimited number of switching 2. Conducting and cutting process does not produce noise, no spark, no electromagnetic interference 3. Compared with electromagnetic relay products, longer life 4. The dual-MOS parallel drive, lower resistance, more current, strong power; at room temperature, operating current of up to 15A, power up to 400W, to meet the most use of the equipment 5. A method for controlling the motor, lights, LED, DC motors, micro-pumps, solenoid valves, etc., very convenient Name: Relay Module size: 6.0 x 3.4 x 1.2cm colour:Blue Material:PCB Package Contents: 4 x Trigger Cycle Timer Only the above package content, other products are not included. Note: Light reflection 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.