More about alarm (136)

1-07-2018 | This installment: - Door alarm mod detects water

1-05-2018 | They say “Curiosity killed the cat”, as if it were some kind of undesirable character defect. But I see it more as a positive quality, essen...

10-04-2018 | Did you know that many projects published at Elektor Labs include the word “simple” in their title? The one we highlight this week is one of...

1-09-2017 | Widely sold, keenly priced and easy to install: what’s not to like about wireless alarm systems? Just this: they are totally unprotected aga...

17-01-2017 | Isn't it embarassing when you miss the birthday of a beloved one? Do you remember birthdays and anniversaries by jotting them down on Post-i...

22-12-2016 | Have you missed your wife's birthday? What about the mother-in-law, or son/daughter? Build this project and there will be no more missed ev...

11-07-2016 | It happened to me, it may happen to you too someday, maybe it already did; I am talking about a leak in your home’s water supply system like...

19-02-2016 | My last Gadget News was about a tag to help find lost items. This time we have another tag but it solves a problem that has rarely been tack...

1-01-2016 | Just add a few external components to a standard low-cost smoke alarm and turn it into a universal alarm sounder. You can easily hook up the...

1-07-2015 | This small circuit beeps for a couple of seconds when the AC power supply fails or drops out. For the power supply (PSU) we’ll use a small 5...