The LI-300 and LI-350 Soil Moisture Sensors provide clear, dependable soil moisture measurements across agricultural and environmental applications. Practically designed, these durable and versatile sensors fit seamlessly into your work, whatever—and wherever—it may be.

DESIGNED FOR ALL SOILS

Practically designed, these durable sensors can withstand multi-season use in a wide range of soil and substrate types—allowing them to fit seamlessly into your work, wherever it may be.

BUILT FOR ALL ENVIRONMENTS

The LI-300 and LI-350 are built for long-term use, whether it's in the field, greenhouse, or other location. In addition, the LI-300's simple analog output makes data analysis and everyday decision-making straightforward.

RELIABLE ACROSS ALL APPLICATIONS

Get data you can trust, consistently and easily. The LI-350 is designed to provide direct EC values—no post-processing required—for a lower risk of user error and a much simpler workflow.

Its ready-to-use data supports quick, confident decisions across irrigation, crop management, environmental research, and more.

Environmental monitoring
Weather stations
Irrigation management
Greenhouses and vertical farms

Research growth chambers
Crop monitoring
Landscape management
Horticulture

	Standard Configurations	Cable Length Options
LI-300	5 m cable (LI-300-BL-5)	10 m, 25 m, 40 m
LI-350	5 m cable (LI-350-BL-5)	10 m, 25 m, 50 m, 75 m

SPECIFICATIONS

Volumetric water content
- Range: 0.0 to 1.0 m³ m^-3
- Resolution: 0.001 m³ m^-3
- Accuracy^*:
  - ±0.03 m³ m^-3 typical
  - ±0.06 m³ m^-3 maximum
Dielectric permittivity^**
- Range: 1 (air) to 80 (water) dielectric permittivity units
- Resolution: 0.002 dielectric permittivity units
- Accuracy: ±1.0 dielectric permittivity units

Temperature
- Range: -40 to 70 C
- Resolution: 0.1 C
- Accuracy:
  - ±0.5 C from -40 C to -20 C
  - ±0.3 C from -20 C to 70 C
Electrical conductivity (bulk)
- Range: 0 to 20000 µS cm^-1
- Resolution: 1 µS cm^-1
- Accuracy:
  - ±5 % from 0 to 10000 µS cm^-1
  - ±8 % from 10000 to 20000 µS cm^-1