LSR-803 Radar Level Sensor

Radar Level Measurement.

Monitor for liquid level up to 591 inches (49.2ft / 15m) with this simple to operate Radar Level Sensor.

CE Mark




The LSR-803 sensor are W-band FMCW continuous frequency modulation radar level transmitter. The sensor provides continuous level measurement up to 591 inches (49.2ft. or 15 m) with 4-20mA output as well as RS-485 and BlueTooth® 5.0.

The LSR-803 Series has a 1.3”OLED display and 4 buttons for quick configuration and can be wirelessly configured via the uPyxis® app for Mobile or Desktop devices enabling rapid integration and deployment in the field. The sensors are powered by a24 VDC /2.0W external power supply or 4-AA alkaline batteries and are ideal for use with commonly used OEM controllers, PLC or DCS systems. This non-contact liquid level sensor platform is well suited for corrosive liquids. Some usual applications include industrial, municipal process liquid storage and chemical feed applications.


  • Radar Liquid Level Measurement up to 15 Meters (+2mm)
  • Embedded Transmitters 4-20mA and RS-485 Outputs
  • Bluetooth® Version 5.0 for Rapid-Wireless uPyxis Configuration
  • LoRa (Long Range Radio) Implemented LSR-801L
  • 24VDC Powered with Smart Switch Capability
  • PVDF Transducer / 6P Polycarbonate Enclosure
  • 10-ft Waterproof 7-Pin Quick Adapter/Flying Lead Cable
  • Extension Cables Availableix.Automatic Temperature / Electromagnetic Noise Compensation



Item LS-803L
Part Number 50191
Range 2–590in (0.05–15m)
Accuracy ±2mm
Resolution 0.02in (0.5mm)
Dead Zone 4in (10cm)
Configuration uPyxis® App
Power Supply (4) AA Batteries / 24VDC. 2.0W Max
Signal Output Bluetooth® 5.0 / 4-20mA & RS-485 Modbus
Measurement Interval Programmable via uPyxis
Enclosure Rating IP66
Installation 2in MNPT
Storage Temperature -4-140 °F (-20-60 °C)
Operational Temperature 5-122 °F (-15-50 °C)
Pressure -29–58psi (-0.2–0.4MPa)
Enclosure Material Polycarbonate, Polybutylene Terephthalate
Transmittance FCC ID 2BAJ2-LSR
Dimension 4.13in (105mm) H, 3.31in (84mm) D
Weight 370g (0.82lbs)

Support Documents

LSR-803 Series Data Sheet

LSR-803 Series Radar Operation Manual Ver 1.0


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