A smart burglar alarm system typically consists of various front-end detectors and a central receiving unit. These detectors are responsible for identifying unauthorized entry and sending signals to the alarm host. The system is designed to monitor different areas, such as specific points, lines, surfaces, or entire spaces. Among the many types of detectors available, infrared sensors are the most commonly used. There are several varieties of infrared detectors, each tailored to suit different environments and site-specific requirements. One popular type is the dual-technology infrared detector, also known as an infrared dual detector.
An infrared dual detector combines two detection technologies to trigger an alarm. This means that an alert is only activated when both sensors detect a target either simultaneously or within a short time frame. This dual approach significantly reduces false alarms by ensuring that only genuine intrusions trigger the system. Common combinations include microwave and passive infrared (PIR) detectors, as well as ultrasonic and PIR detectors. In terms of reliability and performance, the microwave and PIR combination is considered the most effective. Studies show that it has a false alarm rate 421 times lower than single-technology detectors and 270 times lower than other dual-technology models. As a result, it is widely adopted in numerous security projects across the world.
It’s important to note that in certain specialized applications, different types of infrared alarm systems may be required. For example, high-security facilities or environments with unique challenges might need customized solutions beyond standard dual-technology setups.
Source: http://Info424.html
Submitted by: http://news.chinawj.com.cn
AQZ Rail Type Temperature Transmitter
Aqz Rail Type Temperature Transmitter,Aqz Temperature Transmitter,Rail Type Temperature Transmitter,Din Rail Installation
Yuyao Gongyi Meter Co.,Ltd. , https://www.yycj.com