Specially made with a unique Auroom design, this Thermo-& hygrometer is a 2-in-1 device that allows you to measure temperature anf humidity at the same time. With this simple conveinance, you can be sure that your sauna environment is performing at levels perfect for you. It's sleek design makes for an easy, non-abrasive look that has needed functionality. Measures both temperature and humidity for maximum convenience Sleek, black powder coated stainless steel casing Clear, easy to read, mineral glass cover 2-in-1 Thermometer & Hygrometer device Unit of measurement (Thermometer) : Celsius Unit of measurement (Hygrometer) : Percent of relative moisture Installation : 7-11 inches (20-30 cm) below sauna ceiling Measurement range (Thermometer) : 20-140 degrees celsius Measurement range (Hygrometer) : 0-100%