Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Operating Frequency	24GHz ISM Band
Communication Interface	UART TTL & Bluetooth BLE
Supply Voltage	5V DC ±5%
Detection Range	0.5m to 4.0m
Detection Angle	±45 Degrees
Operating Temperature	-20°C to 60°C
Module Dimensions	20mm x 20mm x 3mm
Configuration Method	Android/iOS Bluetooth App
Output Protocol	Custom UART Data Frame
Antenna Type	On-board PCB Array

5 reviews

Anonymous

Mar 24, 2026

Rating: 3/5

Documentation needs work

Sensor functions well once configured, but the UART protocol documentation was a bit vague. Had to sniff packets to understand fully.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect for automation

Integrated this into my bathroom lighting system. Detects presence even when standing still, unlike PIR sensors. Bluetooth config is a nice touch.

Anonymous

Feb 12, 2026

Rating: 5/5

Great value for mmWave

Compared to other 24GHz modules, this is very affordable. Presence detection is reliable for turning on HVAC systems.

Anonymous

Jan 29, 2026

Rating: 5/5

Better than expected range

I was worried about the 4m limit but it covers my small office perfectly. Sensitivity settings are flexible enough to ignore pets.

Anonymous

Jan 29, 2026

Rating: 4/5

Solid sensor, minor app issues

The hardware works great with my ESP32 project. The mobile app for configuration crashed once but reconnected fine. Detection is very accurate.

5 FAQ

Q: Is there a library for Arduino?

A: Community libraries are available, but official support focuses on UART protocol specification.

Q: Does it work through glass?

A: Yes, mmWave signals can penetrate non-metallic materials like glass and thin wood.

Q: Is the Bluetooth module always on?

A: Bluetooth is primarily for configuration; UART is used for real-time data output.

Q: What is the default baud rate?

A: The default UART baud rate is 115200 bps.

Q: Can this detect breathing movements?

A: Yes, it is sensitive enough to detect micro-movements associated with breathing.

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