Feature: 1. Adopts ℃/℉ 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/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℃-+60℃ and humidity value for 0-99% 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% Brand New Item Type: Temperature Humidity Meter Material: ABS Temperature Range: -30℃-+60℃, for optional external sensor: -40℃-+85℃ Temperature Accuracy: ±5℃ (-20℃-+40℃), ±1℃ (others) Temperature Unit: ℃ or F optional, set by THC-4 data management software Humidity Measurement Range: 0-99% RH Humidity Accuracy: ± 3% RH (25℃, 20-90% RH), ±5%RH (others) Resolution: Temperature: 0.1℃; Humidity: 0.1% RH Record Capacity: 16000 Groups (maximum) Record Interval: 10s-24 hours adjustable Communication Interface: USB Interface Power Supply: 1 x 3V CR2450 Battery (not included) or power supply via USB port Environment Temperature: -30℃-+ 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 / 3.5 x 1.8 x 0.6in Weight: Approx. 98g / 3.5oz Package List: 1 x Temperature Humidity Meter 1 x USB Cable1 x Temperature Probe1 x Disc1 x Instruction Note: 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.