Feature: 1. It can measure relative humidity, ambient temperature, wet-bulb temperature and dew point temperature. 2. ST6817 is a stable, safe and reliable hand-held digital temperature and humidity meter. 3. Auto power off function, power off automatically within 30 minutes without any operation. 4. There is a maximum/minimum/average mode, unit conversion between Celsius and Fahrenheit, and data storage function, which can store 99 data units. 5. Small size, light weight, easy to carry, it can be used for cultivation garden, laboratory, wine cellar, farm, storeroom, family, etc. 6. Made of high-quality materials, it is durable, wear-resistant and corrosion-resistant, and can adapt to various harsh environments. Specification: Condition: 100% Brand New Item Type: Temperature Humidity Meter Material: ABS Color: As shown in the picture Weight: Approx.312g/11oz Ambient Range:-20.0°C~60.0°C（-4.0°F~140.0°F) Accuracy:0.0°C~45.0°C（32°F~113°F）±1.0°C/2.0°F Other:±1.5°C/3.0°F Resolution:0.1°C/0.1°F Humidity Range:0.0%~99.9%RH Accuracy:20%~80%:±3.0%RH Other:±4.0%RH Resolution:0.1% Wet bulb Range:-20.0°C~60.0°C（-4.0°F~140.0°F) Accuracy:0.0°C~45.0°C（32°F~113°F）±1.0°C/2.0°F Other:±1.5°C/3.0°F Resolution:0.1°C/0.1°F Dew point Range:-50.0°C~60.0°C（-58.0°F~140.0°F) Accuracy:0.0°C~45.0°C（32°F~113°F）±1.0°C/2.0°F Other:±1.5°C/3.0°F Resolution:0.1°C/0.1°F Data storage 99 Groups Auto power off 30 minutes Power 3x1.5V AAA(Not included) . Package List: 1 x Temperature Humidity Meter1 x English Manual1 x Bag