# 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.

## 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)