Siemens CP 1612 A2 Operating Instructions Manual page 32

Approvals and certificates
UL approval
The SIMATIC NET communications processor is approved in accordance with the UL
60950-1 standard, First Edition and the UL 1950 standard.
Note
The specified approvals apply only when the corresponding mark is printed on the
communications processor.
CP 1612 A2
32
A5E01169863-01, Release 04/2009