How does a PIR sensor work?
An example of an AI chatbot conversation about how PIR sensors detect motion.
Can you explain how a PIR sensor works?
Sure! A PIR (Passive Infrared) sensor detects motion by sensing changes in infrared radiation, typically from warm bodies.
What kind of applications use PIR sensors?
PIR sensors are commonly used in security systems, automatic lighting, and HVAC systems to save energy.
How do they differentiate between humans and animals?
PIR sensors can't differentiate; they just detect heat. However, some systems use additional sensors to filter out animals.
Are there any limitations to PIR sensors?
Yes, they can be affected by temperature changes, obstacles, and may have a limited detection range.
Can I use a PIR sensor for outdoor applications?
Yes, but make sure to choose a weatherproof model and consider factors like sunlight and wind that can affect performance.
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