Motion sensor – What is the difference between a PIR and a microwave sensor? - Blog

Published: 29.3.2023

Modified: 4.6.2025

Reading time: 7 minutes

Author name: Janne Halttu

Summary

PIR sensor detects temperature differences using infrared rays
The microwave sensor measures the signal to detect echo time movement
The PIR sensor is sensitive to temperature changes, the microwave does not
The microwave sensor works more widely, even through walls
Motion sensors save energy and improve safety

Janne Halttu

Janne Halttu Owner

LedStore.fi entrepreneur who has built 4 detached houses and renovated several properties. 20 years of construction experience has given me a lot of knowledge about structures, and electrical work for several houses. I have worked with LED lighting for over 10 years. I am an expert in Led lighting, I write articles and I am a lighting designer. I often help clients with electrical and structural issues related to lighting and house construction.

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Motion sensor – What is the difference between a PIR and a microwave senso...

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