Mobile Homes
Modern mobile homes have been designed to be energy efficient. Install 
smoke alarms as recommended in Recommended Locations and 
Image 2A.
In older mobile homes that are not well insulated compared to present 
standards, extreme heat or cold can be transferred from the outside 
to the inside through poorly insulated walls and roof. This may create 
a thermal barrier that can prevent the smoke from reaching an alarm 
mounted on the ceiling. In such units, install the smoke alarm on an 
inside wall with the top edge of the alarm at a minimum of 10 cm (4”) 
and a maximum of 30.5 cm (12”) below the ceiling (Image 2A).
If you are not sure about the insulation in your mobile home, or if you 
notice that the outer walls and ceiling are either hot or cold, install the 
alarm on an inside wall. For minimum protection, install at least one 
alarm close to the bedrooms. For additional protection, see Image 1A.
 WARNING: Test your smoke alarm operation after R.V. or 
mobile home vehicle has been in storage, before each trip and at 
least once a week during use. 
Attaching Mounting Plate
OPTION 1:  
Easy Mount – Drywall Only
1. Choose a mounting location 
(wall or ceiling) and drill a 3/16” 
diameter hole at least 1/2” deep.
2. Insert the provided screw 
through the mounting plate 
aligning the ribs on the screw 
with the slots on the mounting 
plate. 
3. Tighten the screw/mounting 
plate to wall or ceiling until 
mounting plate is snug against 
surface. DO NOT over-tighten.
4. Installation / Mounting Instructions
Ribs (2 
places)
Mounting Option 1
Slots