> **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

# Digital Infrared Motion Sensor

**Type:** Product page · **SKU:** SEN0018 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/digital-infrared-motion-sensor.html ([markdown](https://core-electronics.com.au/digital-infrared-motion-sensor.html.md))

This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low.

## Pricing

- **Price:** $6.85 (inc GST) — $6.23 AUD, exc GST
- **Quantity discounts:** 6+ $5.92 (exc GST) · 12+ $5.66 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 20 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0018:1` (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/SEN0018:1.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

**Note: The product supply voltage is modified to 5V.**

This is a simple to use arduino motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low. This sensor checks for infrared heat in it's detecting angle. Human body, pets and several other things emit energy that the sensor is looking for, it compares with the snapshot and if there is a recent change it triggers.

Get on with your Home alarm security audit gear and experiment with this sensor to get a better understanding about its efficiency and working method. Infrared motion detectors are common all around the world for many different appliances. It's great for an Arduino or home automation project that requires automated motion feedback. Commonly found on automatic trigger light systems, where lights are ON when someone is in range and OFF when no one is around. Save power or trigger other actuators like a door opener or pet feeder.

The delay of sensing is adjustable via the potentiometer on the back of the sensor.

![](https://core-electronics.com.au/media/wysiwyg/product_images/sen0018.jpg)

To ease the difficult of using this sensor, a [Gravity ](https://core-electronics.com.au/gravity)Interface is adapted to allow plug&play. The [IO expansion shield](https://www.dfrobot.com/product-1009.html) is the best match for this sound senor connecting to your [Arduino](https://www.dfrobot.com/category-104.html). As this sensor can work at 3.3V which make it compatible with [Raspberry Pi](https://www.dfrobot.com/category-157.html), [intel edison](https://www.dfrobot.com/category-187.html), joule and curie.

### Specification

- Type: Digital
- Supply Voltage:5V
- Current:50µA
- Working temperature:0°C ~ +70°C
- Output level(HIGH):4V
- Output level(LOW):0.4V
- Detect angle:110 Degree
- Detect distance:7 meters
- Size:28mm×36mm ( 1.1 in x 1.4 in)
- Weight:25g
 
### Documents

- [Wiki (Digital Infrared motion sensor)](https://www.dfrobot.com/wiki/index.php/Digital_Infrared_motion_sensor_(SKU:SEN0018))
 
### Parts List

- 1x Digital infrared Motion Sensor
- 1x [Digital Sensor Cable](https://core-electronics.com.au/digital-sensor-cable-for-arduino-10-pack.html)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/6/2/62-125-600x600.jpg)