# PIR (motion) sensor

**Type:** Product page · **SKU:** ADA189 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/pir-motion-sensor.html ([markdown](https://core-electronics.com.au/pir-motion-sensor.html.md))

PIR sensors are used to detect motion from pets/humanoids from about 20 feet away (possibly works on zombies, not guaranteed). This one has an adjustable delay before...

## Pricing

- **Price:** $18.70 (inc GST) — $17.00 AUD, exc GST
- **Quantity discounts:** 10+ $16.49 (exc GST) · 50+ $16.15 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 39 more in 8–12 days.

## Description

PIR sensors are used to detect motion from pets/humanoids from about 20 feet away (possibly works on zombies, not guaranteed). This one has an adjustable delay before firing (approx 2-4 seconds), adjustable sensitivity **and** Adafruit include a 1 foot (30 cm) cable with a socket so you can easily reposition the sensor or mount it using the two drills on either side

Runs on 5V-12V power (if you need to run it off of 3V you can do that by bypassing the regulator, but that means doing a bit of soldering). Digital signal output is 3.3V high/low. Sensing range is about 7 meters (120 degree cone)

For a full tutorial with wiring diagrams, code examples and project ideas, PIR sensor tutorial page!

## Technical Details

**Dimensions:**

- Length: 24.03mm/0.94in
- Width: 32.34mm/1.27in
- Screw hole distance: 28mm
- Screw hole diameter: 2mm
- Height (with lens): 24.66mm/0.97in
- Weight: 5.87g/0.2oz

**PIR sensors and the Raspberry Pi 3 sometimes don't get along - if you're having false trigger reports, make sure the PIR Sensor is far away from the Pi 3**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/8/189-00.jpg)