Miniature loop alarm circuit | Next Electronics

This is a two-zone alarm system featuring automatic exit, entry, and siren cut-off timers. It can be activated by standard normally-closed input devices such as magnetic reed contacts, foil tape, and passive infrared sensors (PIRs). The circuit is designed to...

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...

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...

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...

Midnight Security Light Circuit Schematic

Most thefts occur after midnight when individuals enter the second phase of sleep known as 'paradoxical sleep.' Here is an energy-saving circuit that causes... An energy-saving circuit designed for security applications can be particularly beneficial during the late-night hours when individuals...

Security Monitor

This circuit can be utilized in a garden setting to detect unusual sounds or wildlife noises. It can also monitor sounds around a car parked in a remote location. The cable used for the setup can either be visible or...

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....

5 Zone Alarm System

This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CMOS ICs and features a timed entry/exit zone, 4 immediate zones, and a panic button. There are indicators...

5 zone alarm circuit

This is a complete alarm system with five independent zones suitable for a small office or home environment. It utilizes three CM integrated circuits and features a timed entry/exit zone, four immediate zones, and a panic button. There are indicators...