Description: This device allows you to safely and remotely kill your electronic ignition equipped engine from your transmitter. This kill switch is Fiber Optically Coupled to isolate your ignition system from your radio system. (No Interference!!) Includes a remote mountable bright LED to indicate when the ignition is armed Fiber Optic Coupled input/output Heavy Gauge Wires, universal connectors This device plugs into a spare receiver channel Material: Plastic Specification: Up to 20 Volt 16 amp MOS-FET (IRF7456) output Low to 3Volt 3amp output Low Voltage Drop-Less than 150mv Li-Po/Li-Lon/A123/Ni-Mh/NiCad Input Size Chart: Size: Approx. 60 x 20 x 10mm/2.36 x 0.79 x 0.39inch Package Includes: 1 Piece Gas Engine RC Airplane Kill Switch Note: The kill switch not including BEC function. (BEC: Battery Eliminator Circuit) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.