Motion Sensors

Motion sensors are based on the technoligy of infrared or ultrasonic waves to capture real-time movements generated in a given space devices. These sensors are ascribed mainly to secure camera, doors in a warehouse, and malls, etc. These sensors are one of the most recognized and important devices within the electronic security. They active only with the specific mobility of subjects. There are four types:

Active sensors.
Pasive sensors.
Accelerometer.
Mechanical gyroscope.