> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# PIR (Motion) Sensor

**Type:** Product page · **SKU:** SEN0171 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/pir-motion-sensor-11609.html ([markdown](https://core-electronics.com.au/pir-motion-sensor-11609.html.md))

PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use and don't wear out. For that reason they are commonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Pyroelectric", or "IR motion" sensors.

> ⚠ If this product is unavailable, [we have alternatives here](https://core-electronics.com.au/modmypi-pir-infrared-motion-sensor-hc-sr501.html)

## Pricing

- **Price:** $8.10 (inc GST) — $7.36 AUD, exc GST
- **Quantity discounts:** 6+ $7.00 (exc GST) · 12+ $6.70 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 21 today, and up to 900 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0171:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0171:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

PIR sensors allow you to sense motion, they are almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use, and don't wear out. For that reason, they are commonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Pyroelectric", or "IR motion" sensors.

This PIR (Motion) Sensor can detect infrared signals from the human body or other animals and triggers with movement. So it can be applied to a variety of scenarios that require motion detection. Conventional pyroelectric infrared sensors require a body pyroelectric infrared detector, integrated chipsets, and complex peripheral circuits. So the size of the device is usually larger, the circuit is complex, and reliability is slightly lower. We bring this new pyroelectric infrared motion sensor which is specially designed for your Arduino projects, an integrated digital body pyroelectric and infrared sensor, with a small size, high reliability, low power consumption, and a simple peripheral circuit. It is very simple to use in any project.

### Compatible Boards

- Arduino Uno
- Raspberry Pi
- Micro:Bit
 
### Applications

- Moving human detection.
- Occupancy detection.
- Security systems.
 
### Specifications

- Input Voltage: 3.3 to 5V (< 6V Peak)
- Typical Working Current: 15uA
- Min-Max Temperature: -20°C - 85°C
- Output Voltage: High 3V, low 0V
- Output Delay Time (High Level): About 2.3 to 3 Seconds
- Detection Angle: 100°
- Detection Range: 7 meters (assuming standard indoor lighting)
- Output Indicator LED (ON when output is HIGH)
- Pin Limit Current: 100mA
- On-board Connection: JST PH2.0-3
- Board Dimensions: 30mm × 22mm
 
### Documentation and Resources

- Product Wiki
- [Schematic](https://core-electronics.com.au/attachments/localcontent/SEN0171_V1_Schematic_834235774f7.pdf)
 
### Included Items

- PIR sensor module
- Digital connection wire

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0171-01.jpg)