The TORK SS403 Digital In-Wall Timer is simple to program and gives you complete control over your office and warehouse's automation. Set the timer's automated schedule for anywhere from 5-minute to 24-hour cycles to save energy and money in commercial spaces. This timer is perfect for applications where you need a reliable timed shut-off, including offices and meeting rooms, exhaust fans, equipment rooms and storage spaces. Additionally, optional flash and/or beeper warnings notify employees of when cycles are about to end. Other convenience features include the tamper-resistant design which hides the adjustment knob behind a faceplate and the retrofitting-friendly wiring which does not require a neutral wire. Trust in the timekeeping of TORK, a pioneer in the electrical industry since 1922.