OVER SPEED GOVERNOR (MRL) refers to an overspeed governor specifically designed for machine room-less (MRL) elevator systems. MRL elevators are a type of elevator configuration where the traction machine is located within the elevator shaft, eliminating the need for a separate machine room. The overspeed governor in an MRL elevator serves the same purpose as in traditional elevator systems, which is to prevent the elevator car from exceeding a safe speed in the event of an overspeed condition.