The electric cars motors can be widely used in electric golf cars, electric touristy cars and electric motor cars. The electric cars motors can running under the battery's voltage 24V, 36V, 48V, 72V and 80V, at the same time, the electric cars motor's IP standard can be optional, to meet the requirements of different customers. Outside accurate sensor for monitoring the speed and temperature, easy for changing. The radial structure of the sensor arrangement makes the transmission signal more accurately.