An InfraMat Pro controller will remain on for 12 hours unless you press the Power button to turn it off. To have it automatically shut off after a shorter period, you can add the easy-to-use power timer. Simply plug the timer into the wall outlet, then plug the mat into the timer. Set the timer for the desired period, whether it's one hour, two hours, or any other duration up to 12 hours. Once the set time elapses, the timer will cut off the power supply to the mat. You can find a three-prong power timer on our website, or you may also purchase one from any hardware store or online.