Addind a Smoke detector/carbon monoxide detector to an new building/ addition?  This is the product for you.
Included:
Smoke / carbon monoxide detector
Electrical box
electrical conections
10 feet of wire
instalation
cleanup
permits and fees
 
Note: 
-Must be within 10 wire feet of the next smoke detector.
-Residential only.  
-Must be open studs for the entier wirepull and instal area.