I.R.I.S. ANYWHERE 2 Manual page 25

22 Frequently Asked Questions/Troubleshooting
Problem: The scanner feels warm to the touch.
Solution: It is normal for the scanner to emit a small amount of heat
(around 30-45 C) after prolonged use. However, if there
are strange odors coming from the scanner or the scanner
feels hot to the touch, disconnect the scanner immediately
from the computer.