Interlogix IFS SFP Transceiver - Manual (Page 3)

Safety Notices
The fiber optic SFP transceiver modules are equipped with a Class 1 laser, which
emits invisible radiation. Read the following safety warnings carefully.
Class 1 Laser Product
Complies with FDA Regulation 21 CFR 1040.10 and 1040.11
Class 1 radiation is present when the device or system is powered
up. Do not look directly into a laser aperture, as prolonged exposure
may cause eye damage.
Only trained and qualified personnel should be allowed to install or
replace these SFP modules