... electronic controlled in-line fuel injection pump electronic speed governor tester Tai'an Jiaxing Trading Co., LTDRED-4 ZEXEL electronic controlled ... corresponding indicator light turns off, press ↑ ↓button to adjust PWM value 5%-95%; while the corresponding indicator light turn on, press ... . Limp home Fixed speed switch, while the lamp light, PWM value is 95%4. Pull Down switch, When the lamp light ...