Mannix LAM880D Dew Point Thermo-hygrometer Displays: · Dew point · Temperature · Humidity Min/max memory Data hold Auto power off F/C switch Pocket clip Low battery indication Specifications: Temperature range: -4 to 122F (-20 to 50C) Humidity range: 0 to 100% RH Dew point: -22 to 122F (-30 to 50C) Temperature accuracy: 1.8F (1C) Humidity accuracy: 5% RH Response time: 60 seconds (approx.) Microprocessor based design Dimensions: 6.7" x 1.85" x 0.5" Power source: 2 "AAA" batteries Supplied With: Batteries Protective cap with pocket clip