(1) SM stands for digital meaning combined power is only to control the gas and the motor to match, and at the same time, the car will collide with the controller at the same time. The phenomenon of self-preservation is transmitted to the motor through the current to prevent the motor from going.

(2) Some people say whether the SM combined power is a dual power. It can tell you that it is not a dual power, it is a motor and a variable frequency relay, and the combined power is only a motor and a controller. Accompanying