This is the OEM replacement motor controller originally supplied for Keys Fitness manufactured treadmills for the Keys, Ironman, Tripumph, Alliance, Milestone, Smooth, CardioZone, Exerware, Galayan's, Encore and HealthTrainer brands. This motor controller comes with a 30 day warranty. Just remember that the number one cause of failure of the motor controller is high walking belt friction. I always make sense to replace the walking belt when you are replacing the motor controller. It will keep you from replacing it again, and again, and again!