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Home / Computer Hardware, Monitors & Peripherals / 24GHz Millimeter Wave Radar Module Antenna Sensor Doppler Flow Meter Non-Contact Flat Surface Water Velocity Detector
Computer Hardware, Monitors & Peripherals

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 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.

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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