T4, Digital Waterproof Process Timer counts up or down and then it beeps and flashes when done.Features:Waterproof – meant for tough industrial environments.Loudest buzzer. 103dB warbling tone cuts through the loudest industrial noise.Rugged. Built for rough, wet and corrosive environments.Simple and intuitive. No operator instructions needed.Battery powered. Uninterruptible Lithium battery lasts for years.Easy to use like a kitchen timer.Compact enclosure measures only 4 x 4 inches. Many different operating modes are built-in.The Loudest Buzzer we know of on a battery-powered timer. Warbling tone makes the volume even more penetrating in loud factories. Sometimes its too loud and so we offer a snap-on muffler to reduce volume.Battery lasts for years because of the low-power circuitry.1 second- 100 hours is selected by choosing between MM:SS for up to 100 minutes, or HH:MM for up to 100 hours. This is DIP switch #1.Digital Timer counts up or down from the time you set. When the cycle is completed, a very loud 103dB warbling buzzer sounds, and the front button lights up. Easy to program with only three buttons.Waterproof, corrosion-proof IP65 (NEMA 4X) enclosure is built for plating lines, commercial kitchens, factories, and any wet or corrosive environment.OperationThe blue buttons adjust the time up or down like a kitchen timer. The large green button in front starts and stops the time cycle. That's it!There are many different operation modes available that can be selected with DIP switches. The default mode is a simple countdown (or up) The default mode also allows you to set an early warning chirp at the time you choose. You can select if either the button or LED beacon illuminate at this time. Different operating modes for this timer are:Mode 1 counts down from the set time. If set time is zero then it counts up. An early warning is available on the front button LED. Cycle can be cancelled by holding the start button.Mode 2 like mode 1 but does not allow cancellation.Mode 3 is for triggering the time cycle mechanically with a contact close (like a proximity switch) that remains closed throughout the countdown.Mode 4 allows pausing and re-starting the cycle until the time accumulates to set value.Mode 5 stops automatically at the end of cycle.Mode 6 provides an early warning on the beacon LED.Mode 7 is a guard duty that requires the start button to pressed continually or else an alarm sounds (cycle repeats indefinitely).