Sure, it may detect harmful deadly gas and alert you to dangerous conditions, but it's a plug it and shouldn't suck the juice out of a 9volt battery in 3-4 weeks at the most!!!!! I wish I'd never bought this piece of crap or at least I should have returned it in the allotted amount of time and got my money back. I should have read the other reviews too before buying it. PLUG-INS should drain a battery this quickly. IT SUCKS!!! LITERALLY!!!!