How to use the online alarm clock
Finishing the smoke-alarm check at 6:45 pm gives you a clear point to leave the shared corridor rather than letting one last inspection drift on. The alarm can mark the moment to note any fault, gather your things and be away from the terrace before 7:00 pm.
Before you leave the terrace, the browser alarm needs to remain able to run until it sounds. A phone or laptop that goes to sleep too soon may silence the reminder, so the screen’s sleep setting matters more than its brightness. If the browser page is closed, or the device sleeps before 6:45 pm, the smoke-alarm check will receive no audible prompt. Keeping the device powered and within hearing distance makes the signal useful while your attention is on the final detector.
Once the shared corridor is behind you, the afternoon journey can take longer than the map’s quiet-road estimate suggests. Around 6:45 pm, commuters, buses and school or work traffic may still slow local streets. Building a modest buffer into the trip home means the 7:00 pm boundary is a guide rather than a rushed deadline, particularly if you need to walk to a stop or find parking nearby.
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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