1: The heating cloth must be plugged into the 5V2A power adapter (the store has a special one) or the 5V2A power bank to achieve the desired effect. If the output of 5V2A is not reached, when the high temperature gear is used, the temperature control switch light will not light or the heating effect will not be obvious.   2: When using, please wrap the heating element up and down with a thick cotton cloth such as a towel before using it. This is to prevent the heat from being quickly dissipated, and the temperature cannot be measured when placed on the table. Tips   1. It should not be used by people who cannot take care of themselves, babies or people who are not sensitive enough to heat;    2. Do not scratch the heating cloth with a needle bayonet knife, and it is strictly forbidden to use electricity when there is no one in the room;    3. Do not use in wet conditions, please dry the heating sheet before use;    4. It cannot be used beyond the limited power supply, nor can it be directly connected to the 220V power supply.