Thermo-hygrometer with holder and magnet for an easy installation on the outside of refrigerators/freezers. Display that shows indoor and outdoor temperature and humidity. 1 m long sensor probe cable. Temperature unit °C/°F. Indoor temperature range: -10 up to +50 °C (+14 +122 °F), resolution 0.1 °C/°F. Outdoor temperature range: -40 up to +70 °C (-40 +158 °F), resolution 0.1 °C/°F. Relative humidity measuring range: 20% to 95% with 1% resolution. User-definable alarm function of maximum and minimum temperatures. LED alarm indicator. Power supply: 1 battery LR44 1.5 V. Dimensions: 65 x 59 x 18 mm