This is DLE V2.0 Gasoline Engine Kill Switch. FEATURES: Allows pilot to shut off their electronic ignition equipped gasoline engine from their transmitter Plugs into unused receiver port Fiber optically coupled to isolate ignition system from radio system LED indicates when igniton is armed Compatible with LiPo/Li/Ion, A-123, NiMH, NiCd batteries Up to 20 volt 16 amp MOS-FET (IRF7456) output Low to 3V, 3amp output Low voltage drop, less than 150mv 100% surface mount technology INCLUDES: Gasoline Engine Kill Switch with Universal Connectors and Instructions SPECS: Dimensions: 0.67 x 1.5 x 0.29" (17 x 38 x 7.5mm) Weight: 0.3oz (8g)