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Free encyclopedia of electronics and electrical engineering / Articles

All articles of the Free encyclopedia of electronics and electrical engineering are listed in alphabetical order. For automatic translation of articles into your native language, please use Translate it! form in the top left corner of the page.

1-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z SECTOINS

Security devices and alarm systems

Free library / Articles / Security

Security devices and alarm systems

Security devices and alarm systems. Articles with illustrations and detailed explanations:

A simple laser alarm system

A simple radio alert system

A simple small-sized detector of radio-taps with indication on two LEDs

Acoustic Detector

Acoustic Motion Sensor

Adapter for audible alarm

Alarm channel on the basis of URAL radio station

Alarm device

Alarm device when approaching an object

Alarm signaling device

Alarm system

Alarm with telephone notification

And the watchman, and the illuminator

Anti-Radio Spy

Autonomous security device on infrared rays

Behind the door a tape recorder breezes ...

Calculation of the fire alarm loop

Capacitive key for the security device

Capacitive Relay

Capacitive Sensor

Car security system with satellite tracking coordinates and sending alerts via GSM

Code lock with a numeric keypad

Combination lock (1)

Combination lock (2)

Combination lock on thyristors

Combination lock with alarm

Contactless key

Contactless presence sensor

Detector for searching for radio waves

Detector of radio guts with a logarithmic scale

Device for remote monitoring of the health of piezoelectric sensors

DIY Night Vision

Door Control Device

Door guard

Doppler radar sensor for moving objects DMS-4

Easy Intercom

Economical security sensor

Electric hedgehog

Electronic code lock with four digits

Electronic combination lock

Electronic combination lock with key

Electronic gas sensor

Electronic label

Electronic lock with iButton keys

Electronic lock with iBUTTON tablet management

Electronic security of the village

Electronic Watchman

Electronic watchman on the microcontroller

Encoder and decoder for the alarm channel

Fire alarm systems

For the watchman - a phone call

Gas detector on the GH-312 sensor

Hazardous Gas Alarm

Highly reliable digital lock

Home Alarm

Home alarm system with telephone notification

Home Security System

Infrared Presence Sensor

Integrated security systems

IR communication line in the alarm system

IR listening device

Jammer

Laser pointer in the alarm system

Len Radio in the alarm system

MICROALARM security system (1)

MICROALARM security system (2)

Microcontroller device of protection

Microwave motion sensor for burglar alarm

Mobile GSM Signaling Device

Multi-channel security and signaling devices

Multi-channel security for remote objects

Multifunction code lock

Multifunctional security system

Negotiating machine

Neighbors guard the apartment

Noise Generator

Passenger night watchman

Photoshop with a pulsating beam

Piezo sensor in the alarm system

Piezosiren in the alarm system

Pocket Siren

Portable alarm device

Prefix - howler

Programmable code lock

Project Forget-me-not

Protect your data!

Protects electricity

Pyroelectric alarm in the security system

Radio Emission Sensor

Radio frequency finder of listening devices (1)

Radio frequency finder of listening devices (2)

Radio remote security device

Radio set for the auto-guard

Radio Watch

Radio Zab. Security system

Radio-detector with a linear scale of eight LEDs

Reducing the probability of false alarms

Remote control systems for locking / unlocking doors

Remote object monitoring device

Security Alarm Device

Security alarm system of yard utility rooms

Security Alarm Transmitter

Security alarms for farmers

Security Device

Security device based on the simulator

Security device for garden plots

Security device Laser stretching

Security device on a subscriber loudspeaker

Security device with a resistor key

Security device with iButton keys and shock sensor

Security device with iButton tablet-key management

Security device with independent power supply

Security Device with Telephone Line Alarms

Security device with telephone line notification

Security of an apartment with telephone line notification (1)

Security of an apartment with telephone line notification (2)

Security Pager

Security system with digital indication

Security systems

Sensors for burglar alarm

Seven-channel dongle

Simple combination lock

Simple security alarm for the village

Simple security devices for the apartment and cottage

Simple watchdog alarm call

Smoke Detector (1)

Smoke Detector (2)

Smoke detector for fire alarm

Smoke detector on phototransistor

Stand-alone security device

Telephone Line Security

The alarm clock of the mushroom picker, it is also the watchdog device

The device signaling the counting

The simplest device to search for radio waves

The simplest watchdog

Three-button code lock

Three-phase watchman

Touch alarm

Touch sensor in the alarm system

Transmitter for Forget-Me-Not

Trap for a thief

Two-channel code lock

Ultrasonic alarm device

Ultrasonic Highway

Universal Alarm

Universal Notification Device

Universal security device (1)

Universal security device (2)

Using network wires as a security alarm loop

Vibrating alarm

Vibration sensor for security device

Voice Relay

Watchdog with a phone call

All articles of the section Security:

Security devices and alarm systems

Security. Audio and video surveillance

Security. Car security and alarm systems

Security. Personal safety