Feature:1. Adopts or unit conversion, suitable for using in baby room, bedroom, kitchen, study and living room.2. It has LCD screen to easy setting and make your operation simple and convenient.3. With maximum or minimum value and data hold functions while measuring and automatically recording temperature and humidity.4. High precision and fast response: fast to get the testing result and can test the temperature value for 30-and60 and humidity value for 0-99 percent RH.5. Compact and lightweight for mobility, you can test anywhere to get the accurate results.6. Easy to operate and portable to carry around. High accuracy and fast response, providing fast, accurate and reliable reading data.7. Widely used in home, restaurant, school, factory, shopping mall, warehouse, hospital and so on.Specification:Condition: 100 percent Brand NewItem Type: Temperature Humidity Meter Material: ABSTemperature Range: -30-and60, for optional external sensor: -40-and85Temperature Accuracy: 5 (-20-and40), 1 (others)Temperature Unit: or F optional, set by THC-4 data management softwareHumidity Measurement Range: 0-99 percent RHHumidity Accuracy: 3 percent RH (25, 20-90 percent RH), 5 percent RH (others)Resolution: Temperature: 0.1 Humidity: 0.1 percent RHRecord Capacity: 16000 Groups (maximum)Record Interval: 10s-24 hours adjustableCommunication Interface: USB InterfacePower Supply: 1 x 3V CR2450 Battery (not included) or power supply via USB portEnvironment Temperature: -30-and 60. (Under low temperature environment, LCD display is slow and has no effect on normal measurement or recording. When the temperature is restored, it will display normally.)Size: Approx. 90 x 46.4 x 16.4mm or 3.5 x 1.8 x 0.6inWeight: Approx. 98g or 3.5ozPackage List:1 x Temperature Humidity Meter 1 x USB Cable1 x Temperature Probe1 x Disc1 x InstructionNote:1. Battery Life: Generally, if the recording interval is 15 minutes and the buzzer and key sound are off, the battery can last for 1 year. If the buzzer and keytone are turned on and the keys are pressed five times a day and an alarm is sounded, the battery lasts about seven months.(Battery is not included)2. Please allow 1-3cm error due to manual measurement. Thanks for your understanding.