Measurement temperature range: -50~+70℃, temperature measurement accuracy: ±1.0℃. You can check the current room climate and use a humidifier to adjust the room temperature and humidity as needed. Measurable humidity range: 10% to 99%, humidity measurement accuracy: 5% to 10% (at ambient temperature 25℃). Reliable 10-second measurement gives you accurate, up-to-date readings. Powered by two LR44 button batteries (not included). Dimensions: 48*28.6*15.2mm, small and portable, suitable for various scenarios like living room, greenhouse, bathroom, wine cellar, basement, kitchen, warehouse, attic, nursery, cloakroom. Its elegant appearance also serves as a nice decoration for the living room. This portable thermo-hygrometer can measure indoor humidity and temperature to help you know the condition of indoor air, perfect for personal and professional use. Note: Data is measured manually, please allow 1-3cm error. Due to light and display differences, there may be color variations; actual product received shall prevail.