1-10pcs Multi Servo Tester 3CH ECS Consistency Speed Controler Power Channels CCPM Meter Servo Motor For Arduino UNO R3 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. Specification: -Type: CCPM Servo Tester, ESC or Servo tester -Output: 15mA (5.0) -Voltage Consumption: DC4.8-6V -Output Signal: 1.5ms0.5ms -Size: 48 x 42 x 17mm/1.89'' x 1.65 x 0.67''(Approx.) -Color: Blue Package Includes: 1 Pcs Servo Tester _x000D_