ITEM NAME:Adjustment SteeringGear Tester CCPM 3-Mode ESC Servo Motor for RC Helicopters M& Feature: Brand new and high quality. P roduct Features: The device can be used as a signal generator for electric speed controller (ESC), then you can test your motor system without using a transmitter and receiver. 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. 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. Type: CCPM Servo Tester, ESC or Servo tester Output: ≤ 15mA (5.0) Voltage Consumption: DC4.8-6V Output Signal: 1.5ms ± 0.5ms Size: 42.5 x 24 x 23.5mm Color: Blue Package included: 20 x Adjustment Steering Gear Tester CCPM 3-Mode ESC Servo Motor for RC Helicopters.It can connect 3 servos of the CCPM helicopters and select servos. Type: CCPM Servo Tester, ESC or Servo tester. There are 3 modes to check servos or ESC Automatic "window wiper" mode: make the servo swing like a window wipers in the biggest angle.