Small servo tester: It can easily detect and set the virtual position, jitter and median position of the server. The product is easy to use. By rotating the knob, the servo can be detected. Even beginners can quickly get started and easily complete various settings and tests PWM controller parameters: regulation mode: manual; voltage: 5~ 24V; output signal: 50hz high level 0.5ms to 2.5ms Performance: MCU control, good stability, high precision, small size Wide range of applications: test brushless motors and cabin machines, etc., ideal for electronics enthusiasts and professional engineers Parcel list: You will get 4pcs small servo ESC tester. If you have any questions about the product, please contact us and we will solve it for you as soon as possible.