





80GHz Mmwave Sensor Water Sensor Radar Sensor 0.1-40m
The LDRR04M radar module is specifically designed for hydrological detection. This radar module adopts the FMCW mode, features a non-contact installation design, and is compact in size and structure.
1. High Precision Measurement
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Accuracy: ±3mm
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Resolution: 1mm
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Range: 0.1 ~ 40m
2. Ultra-Compact & Lightweight
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Dimensions: 45.2mm × 45.2mm × 1.3mm
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Weight: 7g – easy to integrate into space-constrained systems
3. Ultra-Low Power Consumption
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Operating current: 20mA @ 12V
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Wide voltage range: 9–24V DC
4. Fast Startup & Flexible Output
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Startup time: 100ms (fastest)
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Refresh rate: 0.1 ~ 25 Fps (adjustable)
5. Robust Environmental Performance
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Operating temperature: -45°C to +85°C
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Suitable for harsh outdoor and industrial environments
Main Parameters
| Part number | LDRR04M |
| Transmission frequency | 77-81GHz |
| Output power | 13-20dBm |
| Beam width (-3dB) | Horizontal ±7°, Vertical ±5° |
| Working voltage | 9-24V, typical 12V |
| Working current | 20mA |
| Communication | RS485 |
| Baud rate | 115200 |
| Protocol | ASCII/Modbus |
| Working temperature | -45℃~+85℃ |
| Refresh rate | 0.1-25Fps |
| Overall dimensions (diameter x height) | 45.2 x45.2 x 1.3mm |
| Weight | Weight : 7g |
| Ranging range | 0.1-40m |
| Measurement accuracy | ±3mm |
| Resolution | 1mm |
| Start-up time | 100ms |
Request Free Quote for 80GHz Mmwave Sensor Water Sensor Radar Sensor 0.1-40m
Application
It features high precision, low power consumption and strong anti-interference ability, and is suitable for water level monitoring in lakes, rivers, mountain floods, reservoirs, sewage networks, etc.
Technical Support & Custom Solution
We provide datasheet, dimension drawing, interface protocol, demo code and technical support.
Support sample test, ODM/OEM customized service, welcome global customers to inquire and cooperate.
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