As we already mentioned, motion sensors are used to detect movement around your property and alert you about intruders. Now let’s discuss the most widely used types of motion sensors.
Active ultrasonic sensors produce ultrasonic waves that humans can’t hear. Their principle of work is pretty simple. When an object is in its way, no matter what size or material it is, the waves will bounce off. With most of these sensors, you can define the distance at which they’ll be triggered. Most of the motion sensors installed at your entry points or windows are directly connected to the alarm. If the sensor gets triggered, it will set the alarm off.
Passive infrared sensors are another popular type of motion detector. These sensors are more advanced and their work principle differs from the previous ones. These sensors emit infrared waves which detect heat. So, basically, when intruders enter their field of action, these sensors detect their temperature. It gets triggered by it and activates your alarm system. You can check the cameras to see what caused the movement and inform the police if needed.
Both options are great, so it’s more of a matter of preference to decide which one to use. However, no matter which one you choose, it’s essential to perform the installation properly. For that purpose, you may use professional security services. Experienced technicians will help you define where it’s better to install motion sensors and assist you with the installation process.