190k views
2 votes
Alarm sensors are basic to alarm system and divided into 3 classes

1 Answer

2 votes

Final answer:

Alarm sensors are essential components of an alarm system, divided into three classes: magnetic contact sensors, infrared motion sensors, and glass-break sensors.

Step-by-step explanation:

An alarm system consists of various components, and one of the essential ones is alarm sensors. These sensors play a crucial role in detecting and alerting the system about potential threats or intrusions. Alarm sensors can be categorized into three primary classes:

  1. Magnetic Contact Sensors: These sensors use magnets to detect changes in magnetic fields when doors or windows are opened. They are commonly used to secure entry points.
  2. Infrared Motion Sensors: Also known as passive infrared (PIR) sensors, they detect changes in heat or movement in their surroundings. They are effective in detecting human presence and motion within a defined area.
  3. Glass Break Sensors: These sensors are designed to identify the sound frequency generated by breaking glass. They can be installed near windows to trigger an alarm if someone attempts to break in.

User Maycow Moura
by
7.9k points