Temperature is accurate to 0.5F and humidity is accurate to 3% RH. Fast response, display last reading in 2 seconds, ideal for measuring fluctuating readings in greenhouses.< /p> Highest and Lowest RecordsThe indoor thermometer updates the highest and lowest temperature and humidity records every 10 seconds. There is a button on the back to change C/F (you need to change the temperature unit before installing the battery). High Definition LCD DisplayGlossy black control panel with LCD display makes it easy to read temperature and humidity from a distance. Product size: 5.8 x 7.5 x 1.9 cm, easy to move and place. Various Installation MethodsThe indoor hygrometer has two installation methods: desktop stand/hanging hole, which can be easily installed in multiple rooms. Perfect for living rooms, nurseries, kitchens, porches, guitar rooms, offices and wine cellars. Wide Measurement RangeThe measurement range of temperature is C to 70C (-58F to 185F) and humidity is 10% RH to 99% RH. The package does not include batteries