By default, the timer operates as follows: it counts down from five minutes to zero minutes, updating every ten seconds. When one minute remains, the background turns yellow and the timer is updated every five seconds. At 30 seconds remaining, the background turns red and updates are continuous. Finally, when time runs out, the counter starts blinking. The counter can be restarted by simply reloading the counter page.
All aspects of the counter can be configured by changing entries in the following form.