ITEM NAME:for RC Car Airplane Adjustment Steering Gear Tester CCPM 3 CH ESC Servo Motor Description Specifications: Channel:3 channels The device also 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. 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 mode: make the servo swing like a window wiper with maximum throw You can also connect 1-3 ESC to test and compare their reaction time respectively Capability to 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 4.5-6.0V Voltage consumption Package Included: 1XÂ Servo Tester Notes: The colors may be a little difference for the different monitor display. Please allow minor deviation due to manual measurement..Capability to connect 3 servos of the CCPM helicopters and select servos. 3 modes to check servos or ESC 1X Servo Tester. Automatic mode: make the servo swing like a window wiper with maximum throw.