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Detect Nearby Objects Without Contact
The mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters) is a presence radar sensor designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.
Key details include Temperature Range: -40°C to 85°C; Interface: UART; Size: 24mm x 28mm / 0.94" x 1.10".
Why you’ll love it
- Sensing range: -40°C to 85°C
- Current draw: 90mA
- Operating frequency: 24GHz
- Compact size: 24mm x 28mm / 0.94" x 1.10"
- Useful spec: 3.6V to 5V
- Easy wiring: UART
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters) | presence radar sensor | Current item |
| mmWave - 24GHz Human Presence Sensing Module (6 Meters) | presence radar sensor | infrared sensing |
| PIR Micro Motion Detection Sensor AM312 | proximity presence sensor module with digital output | digital output, infrared sensing |
| Microwave Digital Sensor Motion Detection | proximity presence sensor module with digital output | digital output, infrared sensing |
What you can build
This sensor is a good fit for robot obstacle avoidance, touchless dispensers, automatic doors, object counters, parking aids, and level alarms.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include USB-to-serial tools, level-safe controllers, displays, and data loggers, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters) |
|---|---|
| Temperature Range | -40°C to 85°C |
| Current in use | 90mA |
| Frequency of operation | 24GHz |
| Size | 24mm x 28mm / 0.94" x 1.10" |
| Power Source | 3.6V to 5V |
| Rate of Baud | 115200 |
| The angle of Beam | 100*40° |
| Distance to detect | 9m |
| Interface | UART |
Wiring & usage notes
Connect power and ground, then wire TX and RX to a serial-capable controller at the correct logic level and baud rate.
What’s in the box
1 × mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters)
Frequently Asked Questions
What does the mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters) measure?
It is designed to measure sensor data for embedded projects.
Can I use it with Arduino, ESP32, or Raspberry Pi?
Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this UART sensor?
This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.
Does it need calibration?
Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping?
Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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