> **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

# Rd-03D mmWave Multi-Human Position Sensor

**Type:** Product page · **SKU:** CE10172 · **Brand:** [AI Thinker](https://core-electronics.com.au/brands/ai-thinker)
**Page:** https://core-electronics.com.au/mmwave-sensor-rd03d-presence-detection-sensor.html ([markdown](https://core-electronics.com.au/mmwave-sensor-rd03d-presence-detection-sensor.html.md))

Track people's position in smart home or robotics projects with this handy module!

## Pricing

- **Price:** $17.25 (inc GST) — $15.68 AUD, exc GST
- **Quantity discounts:** 5+ $15.36 (exc GST) · 12+ $14.90 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 58 today; more stock is typically available with a 14–21 day lead time.

## Restrictions

**For use in Australia**

- Operate only in bands and with settings that are permitted for your location and application. Check this product’s supported frequencies in the description/specs.
- If you intend to operate outside shared/licence‑exempt conditions (e.g. in other bands, at higher power, with high‑gain antennas, or extended duty cycles), you must have the appropriate authorisation.
 
**For use in other regions**

- Follow the spectrum rules for your country/region and select frequencies and settings accordingly.

A declaration of use will need to be submitted during checkout.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10172:1` (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/CE10172:1.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

Looking for an intelligent smart home presence sensor? Or would you like to track people with a robot?

This module can output the X-Y coordinates of people.

*Note: Now includes [a Pico Blade connector](https://core-electronics.com.au/pico-blade-4p-to-dupont-connector-cable.html) (note the cable colours do not match - refer to the labels).*

### Specifications

- Power supply input: 5V up to 200mA
- Logic voltage: 3.3V (A logic level shifter is required for 5V systems)
- Communication method: UART
- Max sensing distance: 8m
- Range resolution: 0.75m
- Range accuracy: 0.15m
- Frequency: 24GHz
- Baud Rate: 256000
- Dimensions: 15mm x 45mm x 7mm
 
### Resources

- [Datasheet](https://core-electronics.com.au/attachments/uploads/rd-03d_v1.0.0_specification.pdf)

## Guides for this product

- [Using mmWave Radar to Detect and Track Humans \| Raspberry Pi Guide](https://core-electronics.com.au/guides/raspberry-pi/using-mmwave-radar-to-detect-and-track-humans-raspberry-pi-guide/)
- [How to add mmWave Radar to a Pico \| Detect and Track Humans](https://core-electronics.com.au/guides/raspberry-pi-pico/how-to-add-mmwave-radar-to-a-pico-to-detect-and-track-humans/)
- [Detect and Track Humans with mmWave Radar on an Arduino](https://core-electronics.com.au/guides/arduino/detect-and-track-humans-with-mmwave-radar-on-an-arduino/)
- [Effective Ways To Measure Distance In Maker Projects](https://core-electronics.com.au/guides/sensors/effective-ways-to-measure-distance-in-maker-projects/)

## Videos for this product

- [How To Use An mmWave Radar to Track Humans \| Rd-03D and Raspberry Pi](https://core-electronics.com.au/videos/how-to-use-an-mmwave-radar-to-track-humans-rd-03d-and-raspberry-pi)
- [How To Use An mmWave Radar to Track Humans \| Rd-03D and Raspberry Pi Pico](https://core-electronics.com.au/videos/how-to-use-an-mmwave-radar-to-track-humans-rd-03d-and-raspberry-pi-pico)
- [How To Use An Rd-03D mmwave Sensor To Create A Human Radar with Arduino](https://core-electronics.com.au/videos/how-to-use-an-rd-03d-mmwave-sensor-to-create-a-human-radar-with-arduino)
- [Effective Ways To Measure Distance In Your Maker Projects!](https://core-electronics.com.au/videos/effective-ways-to-measure-distance-in-your-maker-projects)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce10172-mmwave-person-detection-module-reverse-side.jpg)