Description: This article explains how to implement the following setup using a set of relays: During the day, the door lock remains open on a timer, and the door can be opened by pressing the push button. At night, the door is locked and can only ...

Description The SR01 security relay improves access security by controlling door locks directly from indoors. Unlike traditional systems, where the lock is connected to the door phone’s relay, someone may smash up the door phone and break into the...