High Reliability Accuracy:Made of quality material, durable and wear resistant. Fast response that measures every 10 seconds to provide updated and accurate readings, wide measuring range that measures temperature from -50 ~ 70, measures humidity from 10% to 99%. Accurate Monitoring Digital thermometer hygrometer displays temperature and humidity records. Our digital thermometer hygrometer and humidity gauge is precise within 1 temperature and 5%rh humidity levels. Outdoor temperature trend with sensor, great help for your how to wear and your schedule. With Strong Anti-Interference Strong anti-interference, applies to refrigerated cabinets, display counters and other needs of temperature measurement and display of various equipment. Easy Read OperationThe thermometer and humidity reads quickly, the number will clearly appear on the screen. Temperature range is Celsius only on this model, bright and black front panel with a clear LCD display, easy to read even from a far distance. Compact Size Touch key to switch temperature unit: Celsius(C) .Level icons indicate comfortable, and normal conditions, small and light enough for saving space and carrying around.