Motion detectors use electronics and sensors to detect movement. They can be used as a tool to detect the presence of nearby people, animals, and objects. Motion detection systems can be used in a variety of applications such as surveillance, security, healthcare, and more.

However, motion detectors are most often used in security settings because they alert people of an intruder. Many of the motion detectors have the ability to see through both walls and ceilings; they use infra-red motion sensors. 

There are mainly two types of motion detectors most commonly used – infrared and radiofrequency motion detectors. Infrared motion detectors are used for detecting heat, while radiofrequency motion detectors can be used to detect movements from a distance.

It’s not just a simple security system that can detect if something is going on. It also helps with fire detection, water detection, and even human detection. This means it can stop potential intruders as soon as they enter the premises, and it will send you an alert via application or an alarm system.