• Bright, clear digital display.
• Relative Humidity Range: 0% - 100%, the sensor can be used for in-situ concrete testing following the ASTM F2170 standard
• Temperature Range: -40°F - 255°F (-40°C - 124°C).
• Dew Point Range: -40°F - 176°F (-40°C - 80°C).
• GPP Range: 0.1 - 3820 GPP (Grains Per Pound).

The HT-4000F is a stand-alone thermo-hygrometer for flooring installers and inspectors. The meter’s detachable sensor makes the HT-4000F ideal for testing a concrete slab according to the ASTM F2170 standard. It has the same fast acclimating RH/T sensor found in our popular TotalCheck 3-in-1 moisture meter. For flooring contractors who prefer having separate meters to one combination meter, the HT-4000F is the perfect solution.