Function overview: 1. LCD screen 2. Dimensions 4828.615.2mm (there is a little error in the measurement) 3. LCD screen size: 35.7*16.8mm (there is a little error in the measurement) 4. Weight: 35 grams (battery included) 5. Humidity display 6. Humidity measurement range 10%~99% 7. Humidity display resolution 1% 8. Humidity sampling period is 10 seconds (1 minute) 9. Humidity measurement accuracy is ±5% 10. Rated voltage DC1.5v (2 AG13 button batteries) 11. Temperature measurement range -50 to 70 12. The accuracy of temperature measurement is 1°C (at normal temperature) 2. Installing the battery Go back to the back of this product; Push the battery compartment cover in the direction indicated by the arrow, insert two LR44 button batteries into the battery compartment 3. Installation and operation Embedded install This LCD digital thermometer and hygrometer has a 1.5m long probe, which can test temperature and humidity in some special places. It has been widely used in aquariums,