Temperature is accurate to ±0.5°F 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 Records]The 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 Display]Glossy 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 Methods]The 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 Range]The measurement range of temperature is C to 70°C (-58°F to 185°F) and humidity is 10% RH to 99% RH.</p > The package does not include batteries