A diy solution to protect against thieves in the storage room by making sure that the front door is always locked.
The little guard kit here will detect if the door is locked with a distance sensor that should be installed in the hole of the lock. A light sensor is responsible to check if lights are open because of human movement.
If the door is left unlocked and no one is inside then it will trigger an alarm and it will inform the tenants through IoT cloud services.
The hardware consists of two modules, one internal that monitors the lock and the lights and one external that sends the notifications.
