BW&reg; Servo Tester Gear Test CCPM Consistency Master Checker 3CH 4.8-6V with Indicator Light CCPM Servo Consistency Master/Servo tester. 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. Features: the ability to easily detect and configure the server's virtual spaces, jitter and median. Can be connected to two servos or ESC; MCU control, good stability and high accuracy. Turn the knob, steering can be detected. Output:  15mA (5.0), Input: DC 4.2-6.0V