Description
Reviews
| 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 |
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.
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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