【Precautions】 1. It is forbidden to use the power supply with fast charging function. It is recommended to use a 5V 1A-2A adapter for charging. 2. Please place it on a level and stable table for use. 3. Do not use it during charging. 4. This product is powered by a lithium battery. Please do not charge it after the power is exhausted. It is recommended to charge the lithium battery as you use it. 5. When the timing function is not turned on, it will automatically shut down after 3 minutes of standby; when the timing function is turned on, it will automatically shut down after 15 minutes of standby (standby means that there is no change in the measurement). 6. The surface of the panel is waterproof, and beware of liquid entering the gaps and charging ports of the fuselage. 7. The internal structure of the equipment is precise, and unauthorized disassembly is prohibited. 8. The equipment is guaranteed for 1 year, and unauthorized disassembly or man-made damage is not covered by the warranty. 9. This equipment is a hand-brewed coffee aid and cannot be used for trade settlement and other measurement occasions.