Three-line display permits simultaneous countdown alarm timing of three tests. Extra-large 1/2" digits are easy-to-read across the lab. Times may be set from 1 second 20 hours. When zero is reached the timer starts counting up to show time elapsed since alarming. Additional features include stopwatch, timeout, and time-of-day. If desired, three different countdown times may be set and then started simultaneously or each channel may be started individually. For repetitive tests the memory returns the display to the previously programmed countdown time at the touch of a button. Loud, high-decibel alarm sounds for one minute or may be silenced manually. Timer is perfect for dedicating to a test requiring several different times. Accuracy is 0.01%. Supplied with a 2-year AAA battery. Size is 2 1/2" x 3 3/8" x 7/8".