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Home / Computer Hardware, Monitors & Peripherals / 24GHz Millimeter-Wave Ranging Radar Sensor Module LD303, Smart Motion Detection, TTL Serial Output Distance

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Frequency 24 GHz
Detection Range 0.1m to 5m
Output Interface TTL Serial (UART)
Supply Voltage 3.3V - 5V DC
Operating Current Typical 45mA
Field of View 120 degrees horizontal
Module Size 25mm x 15mm x 5mm
Storage Temperature -40°C to 85°C
Data Protocol ASCII Serial Output
Mounting Type PCB Through-Hole

5 reviews

A

Anonymous

Apr 02, 2026

Rating: 5/5

Great for automation projects

Integrated this into my smart lighting system. Detection is smooth and false positives are minimal.

A

Anonymous

Mar 30, 2026

Rating: 4/5

Solid performance

Works well but requires precise voltage regulation. Range is as advertised.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Excellent sensitivity

Picks up motion reliably through thin plastic enclosures. Very happy with this purchase.

A

Anonymous

Feb 22, 2026

Rating: 3/5

Good but needs tuning

Hardware is fine but getting the serial data parsed took some effort. Docs could be clearer.

A

Anonymous

Feb 21, 2026

Rating: 5/5

Best radar module in this price range

Compared to infrared sensors, this handles ambient light much better. Highly recommend.

5 FAQ

Q: Can this detect static objects?

A: This module is optimized for motion detection and distance measurement of moving targets.

Q: What is the baud rate?

A: The default baud rate is 115200bps, configurable via serial commands.

Q: Can I use this outdoors?

A: The module itself is not waterproof. It requires an appropriate enclosure for outdoor use.

Q: Does it support sleep mode?

A: Yes, low power sleep mode is supported via specific serial control commands.

Q: Is there a library for ESP32?

A: Yes, community libraries are available on GitHub for ESP32 and Arduino platforms.

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