A motion sensor is an essential part of any security system as it is the main device that detects when someone is in the room when they shouldn’t be. These sensors use one or multiple technologies to detect movement in an area. If a sensor is tripped, a signal is sent to the security system’s control panel which connects to your monitoring center and alerts you and the monitoring center to a potential threat in your home.
The main purpose of motion detection is to sense an intruder and send an alert to the control panel which alerts the monitoring center. Sensors work when your home is left alone or when it is told that no one is in the house. Some security systems can be programmed to record events via a security camera when motion is detected. Motion sensors stand guard ready to react to various situations such as movement in your living room, windows or doors being opened or closed, or a broken window. Some interesting features –
They detect body heat. Passive infrared sensors are the most widely used motion in home security systems. When the system is armed, the motion sensors are activated. Once the sensors warm-up, it can detect heat and movement in the surrounding areas, creating a protective grid. The sensors are tripped if a moving object blocks too many grid zones and the infrared energy levels rapidly change.
They send out microwave pulses and measures the reflection of a moving object. They cover a larger area than infrared sensors, but they are vulnerable to electrical interference and are highly expensive.
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