This is a multifunctional Thermo-hygrometer. It is capable of measuring the Temperature, Relative Humidity, and Dew Point. Alarms functions are visible and audible. The sensor can be mounted on the meter or extended for measurement in order locations. Features: Humidity alarm limits can be set and turn on or off MAX / MIN reading memory Selectable °C/°F temperature units Can be wallmount or desktop Can be used either indoor or outdoor CE Marking Specifications: Temperature: Range : -10°C~60°C (14°F~140°F) Resolution : 0.1°C (0.2°F) Accuracy : ±1.0°C (±1.8°F) Humidity: Range : 20%~95% Resolution : 1% Accuracy : ±5%RH within 25% to 85%RH and 0°C to 50°C Dew Point : Range : -29°C~59°C (-20.2°F ~ 138.2°F) Resolution : 0.1°C (0.2°F) Accuracy : ±2°C@20°C (±3.6°F@68°F Sampling rate : about 1 time per 3 sec Setting Range of Humidity Alarm Limit : 20% ~ 95% Operating Temperature : Mainbody : 0°C ~ +50°C Sensor : -10°C ~ +60°C Storage Temperature : -20°C ~ +50°C Power : 2 x 1.5V AAA batteries (not included in the set) Size : 115 x 114 x 25mm Weight : about 145g Set Includes: 1 x Thermo-Hygrometer 1 x Holder 1 x English Instruction Manual Blister packaging