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HC-SR501 PIR Motion Sensor
HC-SR501 PIR Motion Sensor
These PIR motion sensors let me do the classic “walk in, lights turn on” automations for basically no money. They work, but I’ll be honest: they’re pretty rudimentary, and if you’re not doing a budget challenge you’ll probably want more reliable sensors.
Buy on Amazon
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Pros
- +Very inexpensive motion detection for automations
- +Straightforward to wire into ESPHome builds
Cons
- -Rudimentary performance compared to higher-end sensors
- -DIY enclosure/mounting can be a hassle
