ITEM NAME:Multi RC Digital ESC Servo Tester Consistency Speed Controller Power Meter #JT1 Product Description Description: Features: Can be easily detected and set the dummy bit server, jitter and median. Can be connected to two servos or ESC/MCU control, good stability, high accuracy. Turn the knob, steering can be detected. If you connect the electronic governor (brush or brushless available), you can get rid of the remote control device for manual control, for testing tone Speed or motor performance is very practical, no longer cumbersome connecting the remote control and the receiver. It is equivalent to a "Hand Dynamic Receiver" feature, playing rudder knob analog transmitters. Specification: Output: ≠¤15 mA (5.0) Input: DC 4.2-6.0 V Output Signal: 1.5 ms  ± 0.5 ms Size: approx. 46 X 32 X 17 mm/1.81 X 1.26 X 0.67 in Weight: approx. 8 g Adjustment Modes: manual, automatic, and the median. Included: 1 X RC Servo Tester.Included:1 X RC Servo Tester. It is equivalent to a "Hand Dynamic Receiver" feature, playing rudder knob analog transmitters. Turn the knob, steering can be detected. If item is defective after 3 months, you can still send it back to us.