The Mastercool ML52234-BT Bluetooth DigitalThermometer/Hygrometer is a great tool for monitoring temperature and humidity levels in a room. The thermometer can be used to measure temperatures up to 460 degrees Fahrenheit and the hygrometer can measure humidity levels up to 95%. The thermometer also has a built-in alarm that will notify you when the temperature or humidity reaches a predetermined level. The Bluetooth connection allows you to wirelessly share the data with other devices, so you can keep track of the conditions in your room from anywhere in the world.