The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time. We can use it to lock the doors and for other security purposes. This article ...

Designed to prevent the likes of retail outlet staff from worrying about managing keys or fitting mechanical pin locks on locked doors, ASSA ABLOY is offering its Code Handle battery-operated lock ...

You don’t need to continue using keys and key cards. When you want effective first-line security for private doors in public spaces, you no longer need cumbersome kit. To keep opportunist hands off ...