<b>Product Description:</b><br> This Digital Thermometer Hygrometer is a battery meter for measuring relative humidity and temperature. <br> The Thermometer Hygrometer can display three types of temperatures around the sensor's air via several convenient procedures: The ambient temperature, the dew-point temperature and the wet bulb temperature. <br> <br><b>Product Description:</b><br> ●Data Hold<br> ●Display Back Light<br> ●MAX/MIN<br> ●Data Logging up to 100 groups<br> ●Low battery indication<br> <br><b>Product Specification:</b><br> Ambient temperature: -20 to 0°C (-4 to 32°F) 0.1°C/°F (±1.5°C) -0 to 45°C (32 to 113°F) 0.1°C/°F (±0.5°C) 45 to 60°C (113 to 140°F) 0.1°C/°F (±1.5°C)<br> Realtive Humidity: 0%-20% 0.1% (±4.0%) 20%-80% 0.1% (±3.0%) 80%-100% 0.1% (±4.0%)<br> Wet Bulb temperature: -20 to 0°C (-4 to 32°F) 0.1°C/°F (±1.5°C) -0 to 45°C (32 to 113°F) 0.1°C/°F (±0.5°C) 45 to 60°C (113 to 140°F) 0.1°C/°F (±1.5°C)<br> Dew point temperature: -50 to 0°C (-58 to 32°F) 0.1°C/°F (±1.5°C) 0 to 45°C (32 to 113°F) 0.1°C/°F (±0.5°C) 45 to 60°C (113 to 140°F) 0.1°C/°F (±1.5°C)<br> Power Supply: 4x1.5V AAA Batteries<br> Product Size: 184mm×60mm×29mm(7.2”x.4”x1.1”)<br> Product Weight: 190g(0.41lb)<br> Category: CE<br> Packing size: 230*110*56mm<br> Packing weight: 280g<br> <br><b>Package include:</b><br> 1*PT6508 TEMPERATURE AND HUMIDITY METER<br> 1*User manual