Features: The adoption of optical coupler isolation technology, strong antiinterference ability, ensures that CDI high voltages will not cause interferences to the receiver signals. Imported tube is used to ensures strong and stable current. It can be used for expanding channel, such as navigation lights, water pumps. It can be used to expand the channel, for example, the remote control of night light, landing gear, water pumps and other equipment. Small and light, the size of a coin Specifications: Component:ABS Working voltages: 5-25.2V Size:Approx.60mm/2.36inch Package Includes: 1 Set Flameout Switches note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.