When employing electromagnetic locks, doors generally do not have a door-mounted manual latch release. Because of the absence of a manual latch release, the NFPA has established The Life Safety Code 7 ...

Fire doors are required to close and latch in order to provide protection during a fire. One strategy for locking classroom doors quickly is to leave the door hardware locked at all times but prevent ...

[Jeremy Blum] wrote in to share his LibeTech QR Code Door Lock project. He developed it during his Senior year at Cornell University along with three of his classmates. It seeks to move away from ...

Smart locks offer app-based features for deadbolts, retrofits, levers and more: Here's how you should choose the right one. Tyler Lacoma Editor / Home Security and Smart Home Tyler has worked on, ...

Here is the circuit diagram of Electronic code lock system using 8051 microcontroller. It is very useful at residential places to ensure better safety. This system demonstrates a circuit named ...