The CS650 reflectometer, a new multiparameter smart sensor for use in soils and other porous media, is now available. The CS650 measures dielectric permittivity, bulk electrical conductivity (EC), and soil temperature, and uses these measurements to estimate soil-water content for a wide range of mineral soils. Innovative techniques allow this new reflectometer to make more accurate water content measurements in soils with bulk EC up to 0.8 dS m- 1 without performing a soil-specific calibration. The CS650 has 30 cm rods and a sensing volume of 7.8 liters. This new smart sensor communicates with a datalogger or computer using SDI-12 or RS- 232 protocols.