T592R WIRELESS PIR MOTION SENSOR

A PIR (Passive Infrared) motion sensor is a key component of your security system, designed to detect the movement of people and animals. Here's a detailed description of how it works and its typical features:

How It Works: Detecting Body Heat

A PIR sensor works by detecting the infrared radiation (heat) that is naturally emitted by warm objects, such as humans and pets. The "passive" in its name means that the sensor doesn't send out any energy to detect motion; it simply receives and analyzes the infrared energy in its environment.

Here's a simple breakdown of the process:

1. Establishing a Baseline: When the sensor is active, it takes a "snapshot" of the infrared energy levels in its detection zone to establish a baseline.

2. Detecting Change: When a person or animal moves into the sensor's field of view, their body heat creates a rapid change in the infrared energy levels.

3. Triggering an Alarm: The sensor's internal circuitry detects this change and sends a signal to the main control panel of your security system, which then triggers an alarm.

To prevent false alarms from gradual temperature changes in the room, the sensor is typically divided into two or more sensing elements. It's the difference in infrared energy detected between these elements as a warm body moves across them that triggers the alarm.