Safety Information - WLANThermo-nano/WLANThermo_ESP82XX_Software GitHub Wiki

Use WLANThermo Nano only for its intended purpose.
Do not drop WLANThermo Nano on a hard surface.
To protect against the risk of electric shock, do not immerse WLANThermo Nano in water or other liquids.
WLANThermo Nano is splashproof, not waterproof.
To avoid damage to WLANThermo Nano do not attach to a hot surface.
When not in use, store WLANThermo Nano in a dry place.
For a longer battery life, do not store WLANThermo Nano completely loaded.