Bottom Bracket Torque SensorThe torque sensor senses the force you're applying to the pedals, so the motor provides the appropriate torque based on that. Therefore, the torque sensor will be more accurate compared to the Cadence sensor. SPECIFICATIONS * Type Speed & Torque Integrated Sensor manufacturer Bafang Model Number SR PA231. 32. ST Input Voltage (DCV) 4. 5 5. 5 strong Signals (Pulses Cycle) 32 Operation Temperature 20 45 Model Compatibility Revenant Shaft Standard JIS