The V5 Smart Motor is more than twice as powerful as the 2-Wire motor 393, and puts an integrated encoder and a motor controller into one compact package. Customize speed and torque with interchangeable gear cartridges.
 
  
Use the built-in encoder to track a robot's rotational position and velocity
  
Compatible with both VEX EDR shaft sizes
 
The motor runs at a slightly lower voltage than the batteries minimum voltage, and the motor's power is accurately controlled to +/-1%. This means the motor will perform the same for every match and every autonomous run regardless of battery charge or motor temperature.