Set it and go! Students will reach for this super simple timer to support a variety of classroom activities. Offers unique visual and auditory indicators, including a warning alarm. Just 2 dialsâ€”total alarm time and warning time. Total alarm time can be set from 5 minutes to 2 hours, in 5-minute increments. Counts down until the colored light glows, and the alarm sounds. Volume adjusts or can be turned off for visual timing.