ITEM NAME:Steering Gear Tester CCPM 3-Mode ESC Servo Checker for RC Models Adjustment Description: 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 Specification: Type: CCPM Servo Tester, ESC or Servo tester Output: ≠¤15mA (5.0) Voltage Consumption: DC4.8-6V Output Signal: 1.5ms ±0.5ms Color: Blue Size Chart: Size: Approx. 5 x 3 x 3cm/1.97 x 1.18 x 1.18inch Package Includes: 1 Piece Servo Tester SKU: DMO0015922261011548.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 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.