Please see the listing photos for contents and specifications.   TWO PACKAGES INCLUDED.  These two smoke and carbon monoxide alarms are new in two sealed packages.  The packages show a little shelf wear, but no damage to the contents.  With shipping, it is $19 per package.   Customer satisfaction is guaranteed.  A full refund is offered if you are not fully satisfied and I will pay the return shipping cost.   Payment due at time of purchase.   TWO LOTS AVAILABLE.  The shipping cost for one lot of two is $9 and $2 more for a second lot purchased.