2018 United Technologies Corporation. All rights reserved. 
This document may not be copied in whole or in part or otherwise reproduced without 
prior written consent from 
United Technologies Corporation, ex
cept where specifically 
permitted under US and international copyright law.
 
VS1 and VS4 name and Kidde logo are trademarks of United Technologies 
. 
ther trade names used in this document may be trademarks or registered 
trademarks of the manufacturers or vendors of the respective products. 
 
Class A: This equipment has been tested and found to comply with the limits for a 
Class A 
digital device, pursuant to part 15 of the FCC Rules. These limits are 
designed to provide reasonable protection against harmful interference when the 
equipment is operated in a commercial environment. This equipment generates, 
uses, and can radiate radio 
frequency energy and, if not installed and used in 
accordance with the instruction manual, may cause harmful interference to radio 
communications. Operation of this equipment in a residential area is likely to cause 
harmful interference in which case the user will be required to correct the interference 
at their own expense.
 
n, see www.kiddelifesafety.com.