Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Frequency	24 GHz
Communication Interface	UART (TTL)
Detection Range	0.5m - 12m (Adjustable)
Detection Angle	±60 degrees horizontal
Supply Voltage	5V DC ±5%
Current Consumption	< 80mA (Active)
Output Signal	High/Low Level or Serial Data
Operating Temperature	-20°C to +70°C
Module Dimensions	45mm x 35mm x 4mm
Application Scenario	Smart Lighting, Security Systems, HVAC Control

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Good range and accuracy

Deployed five units in a warehouse corridor. The 12-meter range is accurate. One star off because the pinout diagram on the silkscreen was slightly faint, but easily solved with a multimeter.

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable for presence detection

Used this for a bathroom occupancy sensor. Unlike infrared, this radar sees through plastic covers and detects breathing-level motion. Very happy with the stability over the last 3 months of testing.

Anonymous

Mar 16, 2026

Rating: 4/5

Great module, needs careful calibration

The hardware quality is solid and industrial grade as described. You do need to spend time tuning the sensitivity registers via serial command to avoid false positives from ceiling fans, but once set, it works perfectly.

Anonymous

Mar 12, 2026

Rating: 5/5

Solved my 'lights off while reading' issue

Standard motion sensors would turn off my lights while I was reading still in my chair. This 24G radar detects the micro-movements of turning pages or breathing. Highly recommended for living spaces.

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent sensitivity for micro-movements

I integrated this into a smart office lighting system. It successfully detects typing and slight hand movements where standard PIR sensors failed. The UART output makes configuration very straightforward.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for IoT projects

Compact size and low power consumption make it ideal for battery-assisted IoT nodes. The documentation provided by the seller helped me get the serial protocol working within an hour.

5 FAQ

Q: Is this module suitable for outdoor use in rain?

A: The module itself is not waterproof. For outdoor use, it must be housed in an IP65 or higher rated enclosure. The radar signals will pass through the plastic casing of the enclosure.

Q: Does it come with example code for Arduino or ESP32?

A: Yes, we provide a download link in the user manual for library examples compatible with Arduino, ESP32, and STM32 platforms to help you get started quickly.

Q: What is the minimum detectable movement?

A: The sensor is capable of detecting micro-movements such as chest expansion from breathing or slight finger tapping, typically in the range of millimeters, depending on the distance and sensitivity settings.

Q: What is the baud rate for the UART interface?

A: The default baud rate is 115200 bps, 8 data bits, no parity, and 1 stop bit. This can be changed via specific configuration commands if your project requires a different speed.

Q: Can this sensor detect movement through a thin plastic enclosure?

A: Yes, 24GHz millimeter-wave radar can penetrate non-metallic materials like plastic, wood, and glass, allowing you to hide the module inside an enclosure without affecting performance.

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