General description Accurate and reliable, the CCYKXA Mini Indoor Thermometer and Hygrometer is designed to monitor temperature and humidity levels in various environments. With a measurement range of -50 °C to +70 °C (-58 °F to +158 °F) and a humidity range of 10% to 99% RH, this device is perfect for home, office, and other indoor settings. Technical specifications Temperature measurement range: -50 °C to +70 °C (-58 °F to +158 °F) Temperature accuracy: ± 1 °C (1.8 °F) Humidity range: 10% RH to 99% RH Humidity accuracy: ± 5% RH Dimensions: 4.3 cm x 4.3 cm x 1.1 cm Weight: 20.7 g Power source: 2032 button battery (included) Battery life: up to 12 months Measurement update frequency: every 10 seconds Usage This mini digital hygrometer features a clear LCD display that allows users to switch between Celsius and Fahrenheit. It includes three icons to indicate humidity levels: a smiley face for optimal humidity (40% to 70%), and dissatisfaction icons for levels below 40% or above 70%.