Item Type: Temperature Humidity Meter_x000D_ Material: ABS_x000D_ Temperature Range: -20~65C (-4~150F)_x000D_ Humidity Range: 0-100% RH_x000D_ Accuracy:_x000D_ Temperature: +-0.5C/1F _x000D_ Humidity: +-5.0%_x000D_ Wireless Range: 50M/164ft_x000D_ Free APP Control: Yes_x000D_ Sensor Type : MEMS_x000D_ Battery: 1 x CR2477 button battery 1000MAH (Battery Included)_x000D_ Alarm: No_x000D_ Historical Memory Time: Every 10 minutes_x000D_ Battery Life: About 365 days_x000D_ Weight: Approx. 35g / 1.2oz 1[Compact And Portable] Temperature humidity meter is small, easy to carry without taking up too much storage space, top carry design to hanging it on a wall hook. 2[Real Time Monitoring] After connecting to the APP, upload the data to the APP, and generate a curve in the APP so that you can intuitively understand the temperature and humidity changes, record and analyze, and take care of the health of your family. 3[Data Storage Function] Built in storage function, record temperature and humidity every 10 minutes, data can be exported to CSV file, and can be shared with friends. 4[High Accuracy] Adopt MEMS digital temperature and humidity sensor, with stable and accurate measurement, and refreshes rate of 1 second/time. 5[Widely Application] Widely used in greenhouse planting, agricultural breeding, flower house, cold chain, warehouse, indoor, pharmacy, etc. 1 x Temperature Humidity Meter(Battery Included) 1 x Accessory 1 x Manual