Kronos 4000 series User Manual page 128

Appendix A Timeclock Specifications
AC Surge Protection:
FCC:
Approvals:
A-2
Timeclock withstands AC power surges induced by lightning,
the local power company, or inductive switching transients as
tested in accordance with IEEE Standard 587
Meets all Federal Communications Commission (FCC)
requirements for Class A computing device
Underwriter's Laboratories (UL)
Canadian Standards Association (CSA)
ADP, Inc.