# mmWave Radar - Human Presence Detection

**Type:** Product page · **SKU:** SEN0395 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/mmwave-radar-human-presence-detection.html ([markdown](https://core-electronics.com.au/mmwave-radar-human-presence-detection.html.md))

This 24GHz millimeter-wave radar sensor employs FMCW, CW multi-mode modulation, and separate transmitter and receiver antenna structure. In working, the sensor first...

## Pricing

- **Price:** $48.05 (inc GST) — $43.68 AUD, exc GST
- **Quantity discounts:** 6+ $41.50 (exc GST) · 12+ $39.75 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 95 more in 8–12 days.

## 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

This 24GHz millimeter-wave radar sensor employs FMCW, CW multi-mode modulation, and separate transmitter and receiver antenna structure.

In working, the sensor first emits FMCW and CW radio waves to the sensing area. Next, the radio waves, reflected by all targets which are in moving, micro-moving, or extremely weak moving state in the area, are converted into electrical signals by the millimeter-wave MMIC circuit in the sensor system. After that, these signals will be sent to the processor and processed through the related signal and data algorithms. Then, the target information can be solved out.

The millimeter-wave radar can sense the human presence, stationary and moving people within the detection area. Moreover, it can even detect static or stationary human presence such as a sleeping person. There are two ways provided to output detection result: serial port and I/O port switch quantity. Besides that, the sensor module features strong sensing reliability, high sensitivity, small size, easy to be used or embedded in applications.

![](https://core-electronics.com.au/media/wysiwyg/product_images/sen0395-Board-Overview.jpg)

**Connect Diagram**

## Features

- Human presence sensing: sense if there is human body in areas.
- I/O port switch quantity input and output control
- Serial port input and output control
- Strong anti-interference ability, not to be affected by snow, haze, temperature, humidity, dust, light, noise, etc.
 
## Specification

- Power Supply: 3.6~5V
- Operating Current: 90mA
- Detection Distance: 9m
- Equivalent Transmit Power: 13-15dBM
- Beam Angle: 100\*40°
- Modulation Mode: FMCW, CW
- Operating Frequency: 24GHz
- Operating Temperature Range: -40°C ~ 85°C
- Baud Rate: 9600
- Dimension: 24\*28mm/0.94\*1.10"
 
## Documents

- [Product wiki](https://wiki.dfrobot.com/mmWave_Radar_Human_Presence_Detection_SKU_SEN0395)
- [MicroPython port and example](https://core-electronics.com.au/attachments/uploads/SEN0395-micropython.zip)
 
## Shipping List

- mmWave Radar - Human Presence Detection ×1

## 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/s/e/sen0395.jpg)