Controller size: 9cm x 3cm x 5.2cm.
max current 15A, it is suitable for 180w to 350w brushless dc hall sensors bike motors and also hall sensorless motors.
The controller has learning wires, which can make it to march your motor and work well.
It has 24v version, and 36v-48v universal version. So if you choose 36v or 48v version, you will get the same controller. It is sold with 3-speed switch.