1. Overview of functions: 1. LCD screen 2. Dimensions 48 * 28.5 * 15mm (measurement has a little error) 3. LCD screen size: 35.7 * 16.6mm (measurement has a little error) 4.Weight: 18 g (battery included) 5. Humidity display 6. Humidity measurement range 10% 99% 7. Humidity display resolution 1% 8. The humidity sampling cycle is 10 seconds (1 minute) 9. Accuracy of humidity measurement 5% 10. Nominal voltage DC1.5v (2 button cells AG13 / LR44) 11. Temperature measurement range -10 to 50 degrees Celsius 12. The environment in which the machine is used is 0 to 50 degrees 13. Temperature measurement accuracy 1 degree (under normal temperature) 2. Installing the battery Go back to the back of the product; Push to open the battery cover in the direction indicated by the arrow; Insert two LR44 (or AG13) button cell batteries in the battery compartment. batteries 3. Installation and operation 1. Integrated installation 2. Detector line length can be customized as needed (built-in by default) Home Humidity Temperature Monitor: This portable thermometer hygrometer measures indoor humidity and temperature, helping you to know the conditions of indoor air. Popular mini LCD display digital thermometer thermo-hygrometer and is widely used in living room, greenhouse, musical instrument room, wine cellar, cellar, kitchen warehouse, attic, nursery, cloakroom. Color: 5pcs Product functionality: 1. Mini size and exquisite design, easy to carry and widely used. 2. The small and portable temperature and humidity meter is suitable for every scene. 3. With the digital thermo-hygrometer you always have an up-to-date view of the indoor climate and therefore can use the humidifier as you wish to adjust the temperature and humidity of the temperature and humidity. Package included: 5x Digital thermometer hygrometer