Nowadays, the application of anti-theft alarm is more and more extensive, and many users are still confused about the specific components of the whole set of anti-theft alarm and what functions are played, as well as some commonly used terms. So let's answer some of the frequently heard questions.
1. What is an anti-theft alarm system?
The anti-theft alarm system is an alarm system that uses detectors with various functions to protect the periphery, space, environment and people of the armed area as a whole.
2. What is a detector?
The detector uses the current, pulse and other signals generated by the sensor to induce various physical and chemical changes to drive the radio frequency circuit to emit an alarm signal.
3. What is inductive sensitivity?
Refers to the detection distance and response speed of the detector when the alarm is triggered. With high sensitivity, it can be detected at a long distance from the detector. If the sensitivity is low, it can only detect a relatively close range.
4. Function and working method of anti-theft host
The alarm host is the core of the alarm system. It is used to receive the alarm signal sent by the detector while giving timely feedback; after the host receives the alarm signal, it will generate a high-decibel siren, and will use the mobile network to dial out multiple sets of alarms set by the owner. telephone.
5. What is a door sensor? How does it work?
The door sensor is used to sense the opening and closing of doors and windows. Usually there are wooden door magnetism, window magnetism, rolling shutter door magnetism, iron door magnetism. The principle is that the magnetron can be used to control the opening and closing of the magnetron. When the two are brought together, the magnetron is in a closed state. At this time, the magnetron will be disconnected when the two are separated, and the disconnect signal will be Trigger the radio frequency circuit to send a wireless alarm signal to the alarm host.
6. Passive infrared anti-theft detector
Passive infrared detectors rely on passively absorbing heat energy and the infrared heat emitted by the animal's body to give an alarm. It is also called a pyro-infrared probe. The detector itself does not emit infrared rays.
7. What is a gas detector? How does it work?
It is mainly installed in the kitchen to effectively prevent gas leakage from endangering the life of the owner. The sensor at the front end will change the temperature when the gas is detected, and the process of change is transformed into a control signal through the processing circuit to trigger an alarm signal.
8. What smoke detector? How does it work?
Smoke detectors are used in home, office, and commercial areas. Alarms were issued in time for the fire and smoke that occurred in the early stage of the scene to prevent problems before they occur. Usually divided into ionic smoke and photoelectric smoke. The principle of ionic smoke is that when there are smoke particles between the electrodes, the voltage between the electrodes will change.
9. What is the launch distance?
The farthest distance that the wireless device in the alarm system transmits the wireless alarm signal in the form of electromagnetic waves after being triggered.
10. What is Shuangjian detector
In order to overcome the shortcomings of a single technology detector, two types of detectors with different technical principles are usually integrated. The detector that only alarms when the sensors of the two types of detection technologies detect the movement of the human body is called a double-check detector. The common dual-check detectors on the market are mostly microwave + passive infrared, in addition to infrared + air pressure detectors and audio + air pressure detectors.
