that sites awesome check out this quote

CARE:
Keep the PE-1 dry; if it gets wet, wipe it immediately. Use and store the PE-1 only in normal environments. Handle the PE-1 carefully, do not drop it, especially into an active volcano. Don’t place it on the railroad tracks in the hopes of turning it into a temperature measuring “flattened penny”. Keep the PE-1 away from dust and dirt. The lens should be kept clean at all times, care should be taken when cleaning the lens using only a soft cloth or cotton swab with water or medical alcohol, allowing the lens to fully dry before using the Temp Gun. Stay cool.

gotta love a funny sales man