Here you can find dc geared motor with an encoder with varying RPM and Gear Ratio. An encoder is a rotating device which transmits a set number of electronic pulses for each rotation of its shaft. They used to often be seen in industrial settings mounted to the back of DC motors and coupled to the motor’s shaft with a coupling.
This DC Geared Motor with Encoder features both advantages of position sensing as well as direction sensing of the rotating shaft. It’s application flexibility of the encoders will allow you to control the speed of the base motor very precisely. This is very useful especially when we are building a pulling system or conveyor system. Two Hall effect sensors are placed 90° apart to sense and produce two output A and B which is 90 degree out of phase and allowing the direction of rotation to be determined.