Realize high-frequency, fast and frequent on-off of the circuit, and switching .The on-off process will not noise, no electrical , and no electromagnetic interference.The service life is than that of common electromagnetic relays.Adopt dual MOS -connected active output, lower internal resistance, larger current, strong power, 15A, 400W at room temperature, which meets the use of most equipment.It is often used to control motors, light bulbs, LED strips, DC motors, -water pumps, solenoid valves, etc. Through this module, these devices can be controlled, which is convenient.Name: Relay ModuleWorking voltage: 6-30VDimensions: 6x3.4 x1.2cmcolor: blueMaterial: PCBPackage Contents:1 x ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.