See this C/O Alarm
<a href="http://www.amazon.com/gp/product/B003Z4JJX2/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1789&creative =9325&creativeASIN=B003Z4JJX2&linkCode=as2&tag=aff iliatechie-20">Kidde KN-COSM-XTR-B Nighthawk Combination Carbon Monoxide, Fire, and Smoke Intelligent Alarm</a><img src="http://www.assoc-amazon.com/e/ir?t=affiliatechie-20&l=as2&o=1&a=B003Z4JJX2" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" />