Set Contents: Main unit, LED for monitor; LED holder; Connection cable x 1; Jumper plug; Instruction manual (English language not guaranteed); Connects to the ignition switch for gasoline engines to provide stable power to the spark plug and turn off the power supply from the transmitter. Separate control of receiver signal and ignition control signal to prevent malfunction caused by noise. Engine cut settings can be set if the transmitter program does not return to failsafe for a certain period of time. Hybrid type compatible with XBUS/PWM communication method. The included high brightness LED is installed on the outside of the aircraft so that the ignition switch is turned on and off even in flight. Equipped with LED for rotation detection confirmation.