In today’s smart automation landscape, sensors are critical in optimizing energy efficiency, security, and user convenience. Among the most commonly used sensors are motion sensors and true presence sensors. While both serve the purpose of detecting Presence, they function differently and are suited for different applications.

A motion sensor detects movement within its range and activates lights, alarms, or HVAC systems. However, a true presence sensor, also known as a real presence sensor or true presence detector, goes a step further. It can sense even the slightest human presence—whether a person is sitting still, reading, working at a desk, or even sleeping.