BEST OVERALL: YoLink LoRa Smart Window Door Sensors. ↓ Jump to Review. BEST BANG FOR THE BUCK: GE Personal Security Window and Door Alarm. ↓ Jump to Review. UPGRADE PICK: Ring Alarm 5-Piece ...

Window alarms can be easily set up on doors and windows around the home. Ring is one company that has window and door sensors. Once these devices are installed and connected to a mobile device, ...

When placed against a door on the floor, this nifty security device will blare a loud alarm if someone attempts to open the door. 15.99 13% OFF $ 13.99 at Amazon ...

This article was originally published with the title “ Detonating Door and Window Alarm ” in Scientific American Magazine Vol. 8 No. 8 (November 1852), p. 60 doi:10.1038 ...

That alarm immediately activates if a door or window where it’s installed opens, making sure kids don’t go unnoticed if they manage to get outside while left unattended.