A
Anonymous
Mar 13, 2026
Rating: 5/5
Robust housing
Been outside for 3 months in rain and sun. No corrosion or signal loss. IP68 rating is legit.
Description
24GHz Millimeter Wave Radar Module Antenna Sensor Doppler Flow Meter Non-Contact Flat Surface Water Velocity Detector
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Frequency | 24 GHz |
| Measurement Principle | Doppler Radar |
| Velocity Range | 0.1 to 20 m/s |
| Measurement Accuracy | ±0.1 m/s or ±1% |
| Communication Interface | RS485 (Modbus RTU) |
| Power Supply | 12-24V DC |
| Ingress Protection | IP68 |
| Antenna Beam Angle | 12° |
| Operating Temperature | -40°C to +85°C |
| Housing Material | Aluminum Alloy |
5 reviews
A
Anonymous
Mar 08, 2026
Rating: 4/5
Good sensor, steep learning curve
Works well once configured. Documentation could be better for Modbus addresses. Hardware feels solid.
A
Anonymous
Feb 04, 2026
Rating: 5/5
Perfect for irrigation channels
Installed this on our main canal. Data is consistent and matches our manual checks. RS485 integration was straightforward.
A
Anonymous
Feb 01, 2026
Rating: 5/5
Reliable non-contact solution
We needed something without submerged parts to avoid debris issues. This module performs excellently in dirty water.
A
Anonymous
Jan 30, 2026
Rating: 3/5
Expensive but functional
Does what it says. Price is a bit high compared to competitors, but accuracy seems better.
5 FAQ
Q: What is the maximum installation height above water?
A: Recommended height is between 0.5 to 10 meters depending on the beam angle.
Q: Can this connect directly to a Raspberry Pi?
A: Not directly. You need an RS485 to USB/TTL converter module.
Q: What cable length is included?
A: The standard package includes a 2-meter shielded cable. Longer lengths can be customized.
Q: Does heavy rain affect measurement?
A: Heavy rain may cause minor noise, but the filter algorithms compensate for most weather conditions.
Q: Is calibration required after installation?
A: Basic configuration is needed, but factory calibration is standard. No water contact calibration required.
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