Press the "Trigger" button to create a timestamp for the start time. Countdown will start only if a duration is entered.
You can change start time and duration during runtime of the countdown. Timer will stop if the item is changed while the timestamp remains unchanged.
Item to switch.
Click to start
=> Timestamp for "now" is: ---
Enter timer duration in standard duration format e.g. "1h 45i 30s":
Countdown Timer:--:--:--
Item to switch.
Click to start
=>
Timestamp for "now" is: ---
Enter timer duration in standard duration format e.g. "1h 45i 30s":