How to use the online alarm clock
Before handing the job over, set the alarm for 6:21 pm so the next person knows exactly when to check the smoke alarms in the shared corridor of the terrace. That leaves a clear point for the changeover instead of a vague promise to do it before 7:00 pm. Pass on which alarms need testing and whether any residents have already been told.
For a check that matters before a real warning is needed, treat the browser alarm as the cue to start rather than proof that the safety equipment works. Set 6:21 pm, confirm that the displayed time is correct, and keep the sound high enough to notice during the handover. This reminder only sounds while the page remains open and the phone or computer stays awake, so the smoke-alarm check could be missed if the browser is closed or the screen is left to sleep.
As the late afternoon gives way to evening, people in the house may be cooking, settling children or returning from work. Tell them that a short test is due at 6:21 pm, especially if the corridor alarm can be heard inside several homes. Agree who will listen at each end of the shared space, then keep the test brief and report any weak or absent signal straight away.
Common questions
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.
What happens if my laptop goes to sleep before 6:21 pm?
The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.
Do I need an account or an app?
Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.
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.
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