The thermometer has a temperature measuring range of -20 … 60 C and a humidity measuring range of 0 … 99.9% RH. The readings from the thermometer can be read directly on the 2.3" color display. Temperature measurement - Measuring range: -20 … 60 C / -4 … 140 F Humidity measurement - Measuring range: 0 … 99.9% RH - Data memory for 12800 measuring points - For mounting on the wall - WiFi interface