User Guide
Silhouette120V AC/DC Wire-in  
Low Profile Smoke Alarm
Part Number 21007288     Model KN-SMFM-i  
Description
The Kidde Silhouette is a low profile AC/DC powered,   
ionization smoke alarm that operates on a 120V power 
source with a sealed rechargeable battery backup. 
This alarm uses ionization sensing technology. Ionization 
sensing alarms may detect invisible fire particles 
(associated with flaming fires) sooner than photoelectric 
alarms. Photoelectric sensing alarms may detect visible 
particles (associated with smoldering fires) sooner than 
ionization alarms. 
Kidde strongly recommends that both ionization 
and  photoelectric smoke alarms be installed to 
help insure maximum detection of the various types 
of fire that can occur within the home.
This smoke alarm is available in a 4-piece cut case with 
tray for easy display. This unit is a UL Listed product with 
a 10-year limited warranty.
Install Confidence
Easy Installation
•Innovativelowprofilealarmfitsinmostcommon
electrical 2-gang and plastic, round boxes with 
3 1/2” hole spacing.
•Pre-strippedwiringharnesswitheasyoffcapdoes 
not require stripper tool. Tinned strands increase 
conductivity and wire nut grip.
Fewer Callbacks
•Onebuttondesignforeasyoperationandless 
confusion.OperatesSmartHush™andalarmtest.
•Sealedrechargeablebatterydoesnotneedtobe
replaced for the life of the alarm.
User-Friendly Features
•Batterybackupprovidesprotectionincaseof 
power failure.
•Unitcanbeinterconnectedwithupto24total 
devices (12 smoke alarms and 6 heat alarms,  
COalarmsorsimilardevices).Seeuser’sguide 
for complete instructions.
– Innovative low profile alarm design
– Ionization Sensing Technology
– One button design (operates Smart Hush™ and test)
  Test verifies alarm operation
  Hush silences nuisance alarms
– Sealed rechargeable battery backup (included)
  will last the life of the alarm
– LED indicates alarm condition
– Alarm memory
– Pre-stripped wiring harness with tinned strands
U
L
SIGNALING
LISTED


