DLAND Weather Thermometers, Indoor and Outdoor Temperature Humidity Thermometer Digital Hygrometer Wall Mount Monitor Sensor Thermostat for Home,Office Records the MAX/MIN values of temperature & humidity. Temperature range: Indoor temperature: -10~+50(+14~+122, Outdoor temperature: -50~+70-58~+158, humidity range: 20%~99%RH. Power-supply: 1.5V (AAA size) x 1(Available). Display- temperature and humidity display simultaneously. and  unit selectable. Hourly alarm function, Everyday alarm function. Multi-function, low-power, high stability&accuracy , durability and memory of last measuring value with superior technology and quality. LCD screen shows a lovely smile when the indoor temperature is in the range of 40-70%, otherwise, crying face. Remove the protective film which is to prevent being scratched during transportation before use.Desk-top Placing or Wall Hanging.