Not properly closing a refrigerator door will no doubt invite huge electricity bills. This gadget, based on a 4060B CMOS binary counter IC, is an alert device that beeps if you leave the refrigerator ...
It beeps if the fridge door is left open for too long or hasn’t closed properly, to stop food from spoiling. There are lots of other uses as well. A refrigerator or freezer door that is left open or ...
Posts from this author will be added to your daily email digest and your homepage feed. Samsung’s latest update to its Family Hub smart fridge line adds a feature I’ve always wanted — voice-activated ...
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