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water level detector sensor-1
water tank level sensor-1
fluid level sensor-1
fuel tank level sensor-1
level sensor for water-1
liquid level sensor-1
pool water level sensor-1

80GHz Radar Water Level Sensor Liquid Level Radar Sensor

LDRR10 series radar sensor is a radar module specifically designed for hydrological detection. This module adopts the FMCW mode, featuring a non-contact installation design.

It is compact in size and has a tight structure. 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.

1. Millimeter-Level Precision
±3 mm accuracy with 1 mm resolution over a 20-meter range.

2. Ultra-Low Power
Consumes only 18mA at 12V – ideal for battery or solar-powered systems.

3. Adaptable Beam Profile
±25° wide beam standard, or narrow to ±3° with external lens for focused applications.

4. Extreme Environmental Tolerance
Operates from -45°C to +85°C with IP67/IP68 protection.

5. Industry-Standard Connectivity
RS485 interface with switchable ASCII/MODBUS protocols for easy integration.

Main parameters

Part number LDRR10
Transmission frequency 77-81GHz
Output power 13-20dBm
Radiation Angle Horizontal ±25deg, Vertical ±25deg.
External lens antenna with beam width (-3dB) Horizontal ±3deg, Vertical ±3deg.
Working voltage 9-24V, typical 12V
Working current 18mA
Output RS485/UART
Baud rate 115200
Protocol ASCII/Modbus
Working temperature -45℃~+85℃
Overall dimensions 67 x 91.6 mm
Weight 180g
Start-up time 100ms
Resolution 1mm
Measurement accuracy ±3mm
Ranging range 0.1-20m

Request Free Quote for Water Level Sensor 20m Liquid Level Sensor Tank Level Sensor

Request Free Quote for Water Level Sensor 20m Liquid Level Sensor Tank Level Sensor

Application

This module adopts the FMCW mode, featuring a non-contact installation design.
It is compact in size and has a tight structure. It is suitable for water level monitoring in lakes, rivers, mountain floods, reservoirs, sewage networks, etc.

What is the measurement range and accuracy?
Range: 0.1 to 20 meters. Accuracy: ±3 mm. Resolution: 1 mm.
What is the beam angle?
±25° in both horizontal and vertical directions. With external lens antenna, beam width narrows to ±3°.
What is the power consumption?
Low power: only 18mA at 12V.
What communication interface does it support?
RS485 (default) or UART (optional). Protocols: ASCII / MODBUS – freely switchable.
What is the protection rating?
Default IP67, upgradeable to IP68 with full potting for underground or long-term submersion applications.
What are the typical applications?
Lake/river level monitoring, flash flood warning, reservoir measurement, sewage network monitoring.
Is the communication protocol configurable?
Yes. ASCII and MODBUS protocols are supported and can be switched via commands.

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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