Compact design features an electronic capacitance polymer film sensor not affected by condensation. Relative humidity range is 0 to 100.0% with a resolution of 0.1% and an accuracy of ±3% RH mid-range to ±4% RH elsewhere. Both dew point and temperature ranges are –20.0 to 50.0°C and –4.0 to 122°F with a resolution of 0.1° and an accuracy of ±1°C
At the press of a button, unit recalls minimum/maximum readings. HOLD button freezes the display to record a reading. Dual display shows relative humidity with either dew point or temperature on a 3/4-inch-high LCD. Rugged ABS plastic case is 6-1/2 x 2 x 2/3 inches; weight is 3 ounces. Supplied with a Traceable® Certificate and two AAA batteries. Replacement battery Cat. No. 291-1105.
Multi-point calibration on an individually-numbered Traceable® Certificate which assures accuracy from an ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement.