Reliable Accuracy: The measurable temperature range is -50C to +70C (-58F to +158F), with temperature measurement accuracy of 1.0C (1.8F) and resolution of 0.1C (0.2F). Measurable humidity range is 10% RH to 99% RH, with humidity measurement accuracy of 5% RH and resolution of 1% RH. Lightweight Design: The LCD screen provides clear number display, easy to read even from a distance. Compact and lightweight design saves space and allows for easy portability. Air Indicator: Displays a smiley face to indicate comfortable indoor temperature and humidity levels, helping you monitor changes in home environment. Ideal for everyday use. Easy to Install: Can be placed on a tabletop, shelf, or mounted on a wall using included wall stickers. Alternatively, use the built-in hanging hole to hang the device on a nail. (Note: Hanging line not included). Wide Application: Suitable for use in homes, offices, cars, laboratories, hospitals, and aquaculture facilities. Can be used alongside humidifiers, heaters, thermostats, and air conditioners.