The circuit in Figure 1 is a simpler and safer device than a similar one I recently read about (Reference 1). A few years ago, I built the circuit that this Design Idea describes, and the gadget still ...

One of the most power-hungry devices in our homes, besides the air conditioner or heater, is our refrigerator and freezer. It’s especially so if the door doesn’t close all the way or the magnetic seal ...

SANTA FE SPRINGS, Calif., Feb. 17, 2021 /PRNewswire/ — The makers of Senseon® have unveiled their latest access control innovation for the healthcare market in response to the evolving needs of the ...

[CarrotIndustries] wanted to add an audible warning for when the refrigerator door was left open. The result is a fridge buzzer that attaches to the inside of a fridge door and starts buzzing if the ...

Google’s Nest Protect is being discontinued, as is the Nest x Yale Smart Door Lock, as part of a move to build a platform “that all device makers and developers can use,” the company told me in a ...