The TM6331 is a wall mounted weekly timer. The weekly timers TM-619 and TM-6331 are used whenever electrical equipment must be periodically switched on and off at preprogrammed daily or weekly times.

The programmed events are then repeated during the next periods accordingly. They find broad application in heating and refrigerating systems, boilers, ovens, dryers, defrosting equipment, swimming pools, hatcheries, illumination, etc.