Control Company 5008 Traceable Three-Line Alarm Timer User-friendly timer displays three different countdown/alarm times simultaneously. Three unique channels may be started individually or concurrently and programmed to count down from 99 hours, 59 minutes, 59 seconds to 1 second. When zero is reached, an alarm sounds, time's up is displayed, and the timer begins counting up. Memories return the display to the previously programmed time. Perfect unit to dedicate to a Group of repetitive tests. May also be used as three stopwatches or in any combination of up/down timing. Display has a time-of-day clock. To assure accuracy an individually serial-numbered traceable certificate is provided from Control Company ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of standards and technology). for ease in reading, the digits are 3/8-inch-high. Supplied with a magnetic back, easel stand, traceable certificate, and 11/2-year silver-oxide battery. Chemical-resistant ABS plastic case is 2 x 3-1/4 x 1/2 inches. Replacement battery cat. Number 350-18940.