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Door Security Alarm Circuit for Alerting if Door was Opened

Last Updated on August 25, 2023 by Swagatam 22 Comments

dooralarm

The door security alarm circuit discussed in this article alerts the user whenever the door fitted with the circuit is opened or closed or even moved from its original locked position. Using a Reed Relay and Magnet for the Triggering The idea utilizes the very basic reed relay and magnet concept across the door and […]

Filed Under: Security and Alarm Tagged With: Alarm, Alerting, Door, Opened, Security

Hospital Room Call Bell Circuit for Alerting Nurse with a Button Press

Last Updated on January 4, 2024 by Swagatam 19 Comments

nursecall

In this post I have explained a simple hospital room call bell circuit which can be installed in hospital patient rooms for allowing the patients to get a quick access to a medical representative or a nurse whenever in need, by simply pressing a call button at the bedside. The idea was requested by Mr. […]

Filed Under: Health related Projects Tagged With: Alerting, Bell, Call, Hospital, Nurse, Room

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