Electronic thermometer hygrometer humidity meter indoor thermometer for home, office, bedroom and kitchen. High accuracy and fast refresh rate. Wide measuring range measuring temperature from -4.0℉ to 158.0℉ (-20℃~70.0℃). The humidity sensor measures humidity from 10% to 99% RH. The indoor thermometer has a high accuracy of ±2~3% RH and ±1°F, making it ideal for measuring fluctuating readings, for example in a greenhouse. Data measurements are updated every 10 seconds to give you the latest environmental changes. Smart design: Multiple mounting options for this ambient humidity meter with magnet mount, table stand and wall hanging design; place it wherever you want. °F/°C selector on the back. Powered by 2 AAA batteries (not included). A healthier home and environment. Thermometer hygrometer with temperature and humidity meter ensures good control of indoor humidity and has significant benefits for skin and health; can also be used as a refrigerator thermometer, freezer thermometer, reptile thermometer, soil thermometer, humidor hygrometer, cigar hygrometer and more. Specifications: Dimensions: 79*58*22mm; Functions: Detects temperature and humidity; Accessories included: Electronic thermometer hygrometer*1, user manual*1; Celsius or Fahrenheit: There is a button on the back to switch between Celsius and Fahrenheit.