T5 AC-powered, digital process control timer counter counts down then sounds an alarm. Large, backlit numerical display in compact 4" x 4" x 2.75" NEMA 4x, waterproof enclosure plus relay controls other devices up to 10A, 1/2 HP @ 120V, N.O. or N.C. and auxilliary 9VDC output can power dataloggers, autodialers or other external devices.