This is new version, Power switch is Red press button, It can be connected with 5 wire steering servo, there is 5 wire connector. Electronic speed controller governer ESC and Power on off switch Compatible with LAEGENDARY 48KM/H+ 1/10 Scale and Hosim 9125 High Speed RC Car.Truck 25-ZJ07 9125 RC Car Electronic Speed Controller Assembly,9125 RC Car replace ESC and on off Swtich. Electronic speed controller governer ESC and On and Off Power Switch Compatible with KIDCHEER S920 High Speed Hobby Remote Control Cars Vehicles Electronic speed controller governer ESC and Power on/off Switch Compatible with Hosim 9125 and Soyee Altair 1/10 scale 4X4 Fast RC Truck Electronic speed controller governer ESC with power switch button compaitble for XLH Xinlehong 1:10 scale High Speed RC Trucks This is new version, Power switch is Red press button, It can be connected with 5 wire steering servo, there is 5 wire connector.