For your consideration is this

Kidde Carbon Monoxide Detector and Alarm (Model KN-COB-DP2).

This is PRE-OWNED, but has NEVER been opened or used!  GUARANTEED to be FULLY operational!

It can be plugged into any wall outlet or be operated with a 9-volt battery (INCLUDED, but NOT pictured) to give you 10 years of operational life.

PLEASE CONTACT ME IF YOU HAVE ANY QUESTIONS REGARDING ANYTHING!

Shipping is $4.25.