Description: This device measures both temperature and relative humidity levels. It features a minimum/maximum measurement function, data hold function and backlight LCD display, making it perfect and easy to use. Features: LCD backlight display, easy to use in the dark. Use high-sensibility sensor for precise measurement. Support for data hold. Low energy chip and auto power off function make this meter energy-saving. -30~70℃ environmental temperature measurement range, support ℃ / ℉ shift; 0~100% RH humidity measurement range. Specifications: Temperature Range: -10~50℃ Temperature Accuracy: 1℃ Temperature Resolution: 0.1℃ Humidity Range: 0-100%RH Humidity Accuracy: ±4.5% (0-20%), ±3.0% (20-80%), ±4.5% (80-100%) Humidity Resolution: 0.1%RH Battery: 1 x 9V 6F22 Battery (NOT included) Length: Approx. 15.2cm / 5.98inch Weight: Approx. 169g Package Included: 1 x Digital Humidity & Temperature Meter 1、LCD backlight display, easy to use in the dark. 2、Use high-sensibility sensor for precise measurement. 3、Support for data hold. 4、Low energy chip and auto power off function make this meter energy-saving. 5、-30~70℃ environmental temperature measurement range, support ℃ / ℉ shift; 0~100% RH humidity measurement range.