1. Function overview: 1. LCD screen 2. Dimensions 48*28.5*15mm (measurement has a little error) 3. LCD screen size: 35.7 * 16.6 mm (measurement has a little error) 4.Weight: 18g (including battery) 5. Humidity display 6. Humidity measuring range = 10%99% 7. Humidity display resolution 1% 8. The humidity sampling cycle is 10 seconds (1 minute) 9. Humidity measurement accuracy 5% 10. Rated voltage DC1.5v (2 AG13/LR44 button batteries) 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 (below normal temperature) 2. Installing the battery Flip 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 batteries into the battery compartment 3. Installation and operation 1. Integrated installation 2. The length of the detection line can be customized as needed (built-in by default) Home Humidity Temperature Monitor: This portable thermometer hygrometer measures indoor humidity and temperature, you helping to know indoor air conditions. The very popular mini LCD digital thermo-hygrometer and is widely used in living room, greenhouse, instrument room music room, wine cellar, cellar, warehouse, attic, baby room, cloakroom. Color: 3pcs Product feature: 1. Mini size and exquisite design, easy to carry and widely used. 2. The small and portable temperature and humidity measuring device is suitable for every scene. 3. With the digital thermo-hygrometer you always have an up-to-date view of the indoor climate and can therefore use the humidifier as desired to adjust the temperature and humidity.< /p> Package included: 3x Digital Thermometer Hygrometer