Item Name: For R/C Plane Car Boat Servo Tester Tester ESC Digital/Analog 3 Channel Adjuster. Features:There are 3 modes to check servos or ESC.Manual mode: turn the knob with different speed, check the reaction time Neutral mode: make the servo go back to the neutral point Automatic ''window wiper'' mode: make the servo swing like a window wipers in the biggest angle.It can connect 1-3 servos simultaneously and test such as 1-3 servos consistency and so on.You can also connect 1-3 ESC to test and compare their reaction time respectively.It can connect 3 servos of the CCPM helicopters and select servos.It can also connect the servo of airplanes install the steering-box and adjust planes by using such as the neutral mode and so on.LED indicatorsSpecifications:Output: 15mA (5.0)Voltage consumption: DC4.8-6VOutput signal: 1.5ms0.5msSize: 48mm*42mm*17mmNet Weight: 30gPackingincludes:1*MultifunctionServo Tester