Functions/ features: 

Press to turn on "Power on 3rd gear -2nd gear -1st gear - off"

Automatically turns off after 5 seconds of blocking rotation, press the button to turn on the machine;

The battery protection board and control board are equipped with overload protection, which shuts down the machine after 5 seconds of rotor blockage; 

After 5 seconds of shutdown, if the locked rotor current is too high and the battery and motor are overloaded, the power cannot be turned on after the locked rotor shutdown. 

It needs to be charged and restored (this situation occurs when the locked rotor current is too high, and this circuit is designed to effectively protect the service life of the battery and motor)