Weather Clock LCD Temperature Sensor Humidity Meter Digital Indoor/Outdoor Thermometer Hygrometer - 3 line lf LCD display - Show the outdoor temperature/humidity and indoor temperature/humidity at the same time. - Select °C or °F anytime by pushing the buttons on the back of the instrument. - Recording the highest or lowest temperature/humidity value every day. - The instrument has one string to deduct location behind one’s back prop up the board, can hang on the wall or put on the desk - Max outdoor temperature sensing distance:1.5M - Temperature survey range: - Outdoor:-50°Cto 70°C -58°F to 158°F - Indoor:-10°Cto 50°C 14°F to 122°F - Analyze degree:0.1°C - Accurate precision:±1°C ±5%RH - Humidity survey range :25%RH to 98%RH - Analyze degree:1%RH - Change the battery : - Use one battery (1.5VDC) of AAA Size Please change the battery according to the following steps: - the battery opened below the support is covered; - -put the battery in accordance with the instructions of straight negative pole; - cover the battery properly to cover. - The outdoor and indoor temperature/humidity survey method: - Press MAX key and measure the highest temperature/humidity value inside and outside the room of the environment at present. - Press MIX key and measure the lowest temperature/humidity value inside and outside the room of the environment at present. - The internal and external the highest temperature/humidity or the lowest temperature/humidity of environmental room is written down to press RESET key and remove at present, quantity is examined and will go on automatically again.