How to use the online alarm clock
While you wait to check the smoke alarms in the terrace’s communal corridor, set the alarm for 3:36 pm and keep an eye on the displayed time. The alert gives you a clear cue to leave your flat, collect any keys you need and start the check without drifting into another afternoon task. There is still room before 4:00 pm to inspect the shared area calmly.
Your headphones may quietly remain selected as the sound output, even if you have taken them off, so the 3:36 pm alert could play where you cannot hear it. Check the browser’s audio destination and test the volume before relying on the alarm for the corridor inspection. Keep the alarm page running and your phone or computer awake; otherwise no alert will sound and the smoke-alarm check may be missed.
Once the corridor inspection is finished, note how much of the afternoon remains before your next commitment. Use that margin for returning keys, recording any weak chirps or faults, and contacting the relevant neighbour or property manager if necessary. Keeping those follow-up minutes free prevents the 3:36 pm check from running into the next job later that day.
Common questions
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
Does the alarm still work if I close the tab?
No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.
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