Bowers & Wilkins ISW-4 Owner's Manual page 106

STANDARDS CONFORMITY
SA250
102
Conforms to ANSI/UL Standard 60065 7th Edition
Certified to CAN/CSA Standard C22.2 No. 60065
Complies with Part 15 of the FCC Rules
Operation is subject to the following conditions:
1. This device does not cause harmful interference and
2. This device must accept any interference received,
including interference that may cause undesired operation.