The RM-16 with PWM Controller manufactured by Patech is an electronic part for controlling the speed of a motor. It is DIN-rail mountable and has an IP20 rating, meaning it is protected against objects greater than 12.5 mm. The part is connected using screw terminals and supports a current of up to 16A. It is equipped with a Pulse Width Modulation (PWM) controller, which supplies a pulse-modulated signal to the motor's electronic control board, allowing it to adjust the speed and torque of the motor's output.