DC-40T-DN-W with negative count up timer
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![4 inch LED digital wireless countdown timer with count up feature after reaching 00:00](https://dc-digital.com/wordpress/wp-content/uploads/2016/12/DC-405T-DN-W-NEG-Digital-Countdown-Timer-with-4.0-inch-digits-RF-wireless-remote-Negative-Sign-e1614951592770.jpg)
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.