Displays 3 test lines of 1"-digits that can be read from across the lab. Times can be set from 19 hours, 59 minutes, 59 seconds to 1 second. When zero is reached, the timer starts counting up to show the lapsed time since the alarm sounded. Additional features of this timer include stopwatch, time out and time of day. The timer can be programmed for 3 different countdown times that can be started simultaneously or separately. Repetitive tests can be done easily because the memory returns the display to the previously programmed countdown time at the touch of a button. The high-decibel alarm may be turned off manually or is automatically silenced after 1 minute. A magnetic back allows timer to be placed on incubators, titrators, and most lab equipment. Timer comes with a 2-year AAA battery and is supplied with an ISO 17025 serial-numbered certificate to indicate traceability to standards provided by NIST. Dimensions: 2-1/2" x 3-3/8" x 7/8". Weight: 3 oz.