PM6508 High Precision Handheld LCD Digital Temperature Humidity Meter Thermometer Hygrometer Features: LCD display temperature & humidity meter, long service life. LCD display, low power indicator. Backlight display for fast and easy reading. Data hold function, up to 100 data records can be stored. Wet bulb and dew point temperature measurements. HVAC has good superheat, fast and accurate reading. Widely used, such as living and office areas, machine rooms, wine cellars, construction sites and so on. Specification: Condition: Color: Orange Weight: 254g/9oz Safety level: CE CAT.III 300V RoHS Power supply: 4* 1.5V AAA battery (NOT included) Size: 180 * 60 * 29mm / 7.1 * 2.4 * 1.1in Ambient temperature: - 20 to 0 ℃ (-4 to 32℉) 0.1 ℃ / ℉ (± 1.5 ℃) -0 to 45 ℃ (32 to 113 ℉) 0.1 ℃ / ℉ (± 0.5 ℃) 45 to 60 ℃ (113 to 140 ℉) 0.1 ℃ / ℉ (± 1.5 ℃) Relative humidity: 0% - 20% 0.1% (± 4.0%) 20% - 80% 0.1% (± 3.0%) 80% - 100% 0.1% (± 4.0%) Wet-bulb temperature: - 20 to 0 ℃ (4 to 32 ℉) 0.1 ℃ / ℉ (± 1.5 ℃) 0 to 45 ℃ (32 to 113 ℉) 0.1 ℃ / ℉ (± 0.5 ℃) 45 to 60 ℃ (113 to 140 ℉) 0.1 ℃ / ℉ (± 1.5 ℃) Dew point temperature: - 50 to 0 ℃ (- 58 to 32 ℉) 0.1 ℃ / ℉ (± 1.5 ℃) 0 to 45 ℃ (32 to 113 ℉) 0.1 ℃ / ℉ (± 0.5 ℃) 45 to 60 ℃ (113 to 140 ℉) 0.1 ℃ / ℉ (± 1.5 ℃) Package List: 1 x Digital Temperature Humidity Meter 1 x English Manual 1 x Portable Storage Bag