1. Output: ≤15mA (5.0)
2. Input: DC 4.5-6.0v
3. Output signal: 1.5ms±0.5ms
4. Dimensions: 42.5 x 24.0 x 23.5mm
5. Weight: 8g
6. Adjustment method: manual, automatic, neutral.

The left side is connected with two rows of servo pins, which are divided into upper, middle and lower 3 groups, which can connect 3 servos. The single row of pins on the right is connected to the power supply, and the negative side is very close together (you can see the symbol).
This is the negative electrode of the battery, be careful not to reverse the connection, if the power supply reverse connection, the IC will burn out;
When the power is turned on, the blue light is on at the same time, and then only the first light on the left is on, which is a manually adjusted potentiometer test. Press the button, the middle light is on, that is, the centering test; The third light comes on for automatic testing.
The ESC is connected in the same way as the servo, but there is no need to connect the power supply to the input. The test motor needs to be connected to the ESC first.