Temperature and Humidity meter a perfect tool for use in factories, laboratory, logistics, food staff, air-conditioning industries for monitoring of the surrounding changes. Features: MAX and MIN Reading Data Hold LCD Backlight Switch the units: °C/DP/WB/°F Automatic Power Off Specifications: Temperature Temperature range: -20~70°C(-4~158°F) Temperature accuracy: ±1%°C between 5~50°C(41~122°F) Precision of temperature: ±1°C Humidity Humidity range: 0~100%RH Humidity accuracy: ±0.4%RH(25°C(77°F)/10%RH~90%RH), Full range accuracy is ±5%RH Precision of relative humidity: ±4%RH Dew point and Wet-bulb Dew point & wet-bulb range:-20~50°C Dew point & wet-bulb: ±2%°C(5~50°C(41~122°F)/10~90%RH) Precision of dew point & wet-bulb: ±2°C Maximum response time: 30s Power supply: 3 x 1.5V AAA Battery Item Weight: 136 grams Product Dimensions: 2.2 x 7 x 1.2 inches Set Includes: 1 x Humidity & Temperature Meter 1 x English User Manual 3 x AAA Battery