What Are The Types Of Motion Sensor?

What Are The Types Of Motion Sensor? There are three types of motion sensors that are used frequently: Passive Infrared (PIR), Microwave, and Dual Tech/Hybrid. What are the two types of motion detectors? Microwave sensors. Vibration motion sensors. Ultrasonic motion sensors. Reflective motion sensors. Which motion sensor is best? Simplisafe Motion Sensor — Best Motion