DC-40T-DN-W with negative count up timer
This is a customized DC-40T-DN-W, wireless set, count down timer with four inch digits. Customized to count back up after reaching zero and then displaying a negative (dash) symbol in what would be the 5th digit. It is Settable to a maximum of 99 minutes, 59 seconds it will count down to zero, then count back up to 99 minutes, 59 seconds while displaying a negative sign. This allows you to manage the time remaining to zero as well as conveniently track the elapsed time past the target.