Item Name: Consistency Speed Controller Multi Servo Tester 3CH ECS Checker Power Channels. Product size: 48*42*17mmProduct Name: Multi Servo Tester 3CH ECS Consistency Speed ControlerVoltage Consumption: DC4.8-6V100% Brand New and High Quality .Color: BlueNet weight: 16gFeatures.CCPM Servo Consistency Master / Servo Tester.This device can also be used as a signal generator for electric speed controller (ESC), then you can test your motor system without using transmitter and receiver.There are 3 modes to check the servo or ESC.Manual mode: Turn the knob at different speeds to check the response time.Neutral mode: bring the servo back to neutral point.Automatic\ "window wiper\" mode: make the servo swing at the maximum angle like a wiper.It can connect 1-3 servos at the same time and test, such as the consistency of 1-3 servos, etc.You can also connect 1-3 ESCs to test and compare their response time separately.It can connect 3 rudders of CCPM helicopter and select rudders.It can also connect the aircraft's servos mounted on the steering box to adjust the aircraft by using neutral mode, etc.Package includes: 2 x Multi Servo TesterNotes:1.Please allow 1-2cm differ due to the manual measurement!2.Due to the difference between different monitors, the picture may not be reflecting the actual the item, please consider this before the purchase. *Please make