> **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

# Microwave Presence sensor (RCWL-0516)

**Type:** Product page · **SKU:** CE09433 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/microwave-presence-sensor-rcwl-0516.html ([markdown](https://core-electronics.com.au/microwave-presence-sensor-rcwl-0516.html.md))

Is someone there? Be sure with this microwave doppler radar

## Pricing

- **Price:** $1.35 (inc GST) — $1.23 AUD, exc GST
- **Quantity discounts:** 25+ $1.16 (exc GST) · 50+ $1.11 (exc GST) · 100+ $1.05 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 57 today; more stock is typically available with a 8–12 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=CE09433:1` (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/CE09433:1.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

Unlock the ability to sense people, animals and other water-y beings through walls and without any light (including infra-red)

These microwave presence detection modules work similarly to ultrasonic sensors, but instead of using sound it looks for a change in the phase of the return signal.

Check out [this GitHub Repo by jdesbonnet](https://github.com/jdesbonnet/RCWL-0516/) on an interesting dive into how they work or [this bigclivedotcom video](https://youtu.be/Hf19hc9PtcE).

Pinout

 | **Pin function** | **Module Label** |
|---|---|
| A 3v3 regulated output (~100mA) | 3v3 |
| Ground | GND |
| Signal output (3.3V, Detection=High) | OUT |
| Power supply, 4-28V | Vin |
| Enable pin, | Cds |

## Guides for this product

- [Effective Ways To Detect People Using Common Sensors](https://core-electronics.com.au/guides/sensors/effective-ways-to-detect-people-using-common-sensors/)

## Videos for this product

- [Effective Ways To Detect People Using Common Sensors](https://core-electronics.com.au/videos/effective-ways-to-detect-people-using-common-sensors)

## Images

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