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Locker Guard Locker Security Alarm Circuit Anti Theft

Locker Guard Circuit Diagram. This compact circuit is designed to protect a locker or almirah from burglary. If the locker is opened while in the armed state, the circuit triggers a loud police siren to deter the burglary attempt. The Locker...

Door Alarm

The door alarm is designed to be mounted on the door handle and emits a beep when someone touches the door handle from the outside. The door alarm circuit operates on the principle of detecting physical contact with the door...

Home Security System

This alarm circuit activates when switches S1 through S5 are engaged. This action illuminates LED1 and triggers transistor Q1 through integrated circuits IC1C and IC1D. Relay RY1 is configured for self-latching. Switch S10 is utilized for resetting the circuit. When...

Oscillators for Buzzers and telephone Earpieces

In order to generate a single note you may try these simple circuits. With only three components you may implement some basic buzzers. You need a telephone earpiece for the first circuit. Any old telephone set has got one of...

Automatic Room light Control With Bi Directional Visitor Counter

The objective of this project is to create a controller-based model that counts the number of individuals entering a specific room and activates the lighting accordingly. This is achieved through the use of sensors that detect the current number of...

Home security monitor system

This circuit provides normally open (NO) and normally closed (NC) contacts SI, S2, and S3 to activate the alarm after a 30-second delay. S4 and S5 operate instantly. The CANCEL switch resets the alarm. The described circuit functions as a delay...

Security-door-ajar-alarm

The TL3019 device activates, or goes low, when a south pole of a magnet approaches the chip face. In this example, there are five doors, each equipped with a magnet embedded in its edge, with the south pole facing outward....

electronic hotel door vulnerability using stealth lock circuit

The term "pentester" refers to a penetration tester, individuals who assess security vulnerabilities. Many high-end hotels globally depend on keycard locks for securing hotel rooms. However, recent incidents of theft have shown that these locks may not be as secure...

Buzzer Circuit

This project involves connecting the positive terminal of the battery to the positive lead of the buzzer and the negative terminal of the battery to the negative lead of the buzzer. Typically, the positive lead of the buzzer is red,...