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1. What is an anti-theft alarm system?
The anti-theft alarm system is an alarm system that uses the detectors of various functions to protect the perimeter, space, environment and people of the deployment area.
2. What is a detector?
Detectors use sensors to sense various physical changes, chemical changes in the current, pulse and other signals to promote the radio frequency circuit emits an alarm signal.
3, what is the sensitivity of the sensor?
When the detector is triggered by the alarm, the detection distance is far and near, the response speed is fast, the sensitivity is high, and it can be detected at a very long distance from the detector. When the sensitivity of the detector is low, only a closer range can be detected.
4, the role of anti-theft host and work methods
The alarm host is the heart of the alarm system. It is used to receive timely feedback from the alarm signal sent by the detector. After the host receives the alarm signal, it will generate a high-decibel alarm sound. At the same time, it will use the mobile network to dial out multiple sets of alarms set by the owner. phone.
5. What is a magnetic detector? What is its working principle?
The door magnetic detector is used to sense the opening and closing of doors and windows. There are usually wooden door magnetic, window magnetic, shutter door magnetic, iron door magnetic. The principle is to use a magnet to control the principle of controlling the opening and closing of the magnetron. When the two are close together, the magnetron is in a closed state. At this time, the magnetron will be disconnected when the two are separated, and the signal will be disconnected. Trigger the RF circuit to send a wireless alarm signal to the control panel.
6, passive infrared anti-theft detector
Passive infrared detectors rely on the infrared heat energy emitted by the passive absorption of thermal energy in animals to alarm, also known as pyroelectric infrared probes, the detector itself does not emit infrared.
7. What is a gas detector? What is its working principle?
Mainly installed in the kitchen, effectively preventing gas leaks endangering the owner's life. When the sensor at the front end detects the gas, the temperature will change, and the process of the change will be triggered by the processing circuit into a control signal to trigger an alarm signal.
8, what smoke detector? What is its working principle?
Smoke detectors are used in homes, offices, and businesses. Early warning of fire smoke that occurred on the scene was issued in time to prevent accidents. It is generally divided into ionized smoke and photoelectric smoke. The principle of ionized smoke is to use the principle that the voltage between electrodes will change when there is smoke particles between the electrodes.
9, what is the launch distance?
The longest distance that the wireless device in the alarm system transmits the wireless alarm signal as an electromagnetic wave after being triggered.
10. What is Shuangjian detector
In order to overcome the deficiencies of a single technology detector, two kinds of detectors with different technical principles are usually integrated together. Only when the sensors of the two detection technologies detect the movement of the human body, the detector is called a double detector. The common Shuangjian detector on the market is mostly microwave + passive infrared, and there are infrared + air pressure detectors and audio + air pressure detectors and other products.
Anti-theft alarm products related to common sense
Now the use of anti-theft alarms is becoming more and more widespread. Many users have different roles in what constitutes a complete set of anti-theft alarms, and some commonly used terms still feel very confused. So let's answer some of the questions we often hear.