The D204S Analog PIR Sensor is a high-performance, 2-element pyroelectric infrared sensor designed for accurate and stable motion detection. It comes standard with enhanced immunity to EMI (Electromagnetic Interference), ensuring reliable operation even in environments with electrical noise. The D204S is widely used in security systems, such as motion-activated alarms, surveillance systems, and smart lighting controls. Its dual-element design helps reduce false alarms by effectively detecting the difference in infrared radiation caused by moving human bodies. Compact and easy to integrate, the D204S offers a dependable solution for motion sensing in residential, commercial, and industrial safety and automation applications.