First Alert Natural Gas and Carbon Monoxide Alarm. How the hell could UL and NFPA allow something on market which does not fully protect you when it goes on Back Up Battery

 After the Catastrophic Natural Gas Explosion in the Neighborhood of Rustic Ridge in Plum Boro  Allegheny County Pa  which killed 6 and destroyed several homes about 5 miles from where I live many Home Owners where quick to go out and buy or where given First Alert Natural Gas and CO alarms for peace of mind. 

 

https://triblive.com/local/valley-news-dispatch/investigators-say-nothing-from-outside-the-house-caused-fatal-plum-house-explosion/

I had a  Residential Grade Grade Macurco unit on my home security system  which went bad so I figured I should get one as well as the gas units Macurco turn out are of poor quality and often fail early I stopped buying and installing them. 

So while I was at Local Discount Store in Murraysville  I saw he had the First Alert units on sale for $54.00 normally there in 70.00 plus range 

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 At first it looked like a very impressive unit and fact it had a battery back up when not on house power was a bonus

That was till I read the units Warnings

When you read down in the warning the unit when on back up battery has a reduced amount of times its sense Gas and explosive gas could be present and unit will not go into alarm ,

WTF is this I have never seen a life safety  unit with a back up battery like a smoke detector a weather radio etc go to reduced function when on back up battery. So the unit is pretty much worthless on backup battery other than to let you know it has no power.

How in the hell did UL and NFPA allow this unit on the market the homeowner thinks there protected because there is a back up battery but they are not and we all know how many home owners actually read instruction? 

Once again the consumer gets screwed by First Alert .and a lawsuit waiting to happen