In this tutorial, we are making a project of a loud door security burglar alarm. This circuit will activate an alarm that is louder than usual alarms when the door is opened and once the … Read more
door alarm
The door alarm is a very popular protection system and is useful. They are used to see whether the Door is open or locked. We have also noticed any door sensor in the fridge creating … Read more
Magnetic Door Alarm Circuit using Hall Sensor
In this project, we will discuss the “Door Left Open Indicator Alarm Circuit”. A door alarm is a miniature electronic device that is connected to the door and used to identify whether the door is … Read more
Door Left Open Indicator Alarm using Reed Switch
The fridge door alarm circuit is used to sense the status of the door opening OR closing. When the door opens for a long time this circuit triggers the 555 timer output and produces a … Read more