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 ...

Xiaomi has launched the Smart Door Lock E30 with free on-site installation for the first time and 3 years of free warranty. It enables you to say goodbye to the keys and make your life a bit easier.

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 ...

We've received a review sample of the Lockzo AL501 3-in-1 smart door lock system (Smart Lock + Video Camera + Doorbell). It ...