Interval Timer w/ 4, 2.3" red LED digits and external stack lights. A programmable Interval Timer which displays a series of time intervals to guide excercise routines, practice sessions, industrial processing or other tasks which require time control. Shows minutes and seconds. 3 Color separate stack light shows red, green or yellow during each time period. Time intervals may be from 1 second to 99 minutes and 59 seconds. Time intervals or groups of intervals may be repeated up to 99 times or continuously. Horn may be programmed for different patterns or may be silenced. Counts up or down. Shows time of day when not in use. May be daisy chained. Infrared remote control. Includes 3 color Stack light, Power Adapter w/6 ft. cord; IR Remote Control; Operations Manual and one year limited warranty. Size: 18" long x 6-5/8" high x 2-5/8" deep.