Simple easy solution. Overall it is something I don't want to think about and Roost helps me not think about it!

Simple easy solution. Overall it is something I don't want to think about and Roost helps me not think about it!  Read Less

I have had these for years now and can confidently say they're much worse than regular 9V batteries. They don't last years, as ...  Read More

I have had these for years now and can confidently say they're much worse than regular 9V batteries. They don't last years, as promised - they barely last a year. And when they die, they do so without warning - another broken promise. The wifi setup is fiddly. I get false alarms just from noise in the house. And as far as I can tell, you can't replace just the battery portion (despite Roost making reference to such a product on their website); you have to replace the whole expensive unit and re-do the wifi setup. The product had great promise, which is why I backed them on Kickstarter, but it has been a real disappointment. Not to mention: half my detectors don't take 9Vs. I have had these for years now and can confidently say they're much worse than regular 9V batteries. They don't last years, as promised - they barely last a year. And when they die, they do so without warning - another broken promise. The wifi setup is fiddly. I get false alarms just from noise in the house. And as far as I can tell, you can't replace just the battery portion (despite Roost making reference to such a product on their website); you have to replace the whole expensive unit and re-do the wifi setup. The product had great promise, which is why I backed them on Kickstarter, but it has been a real disappointment. Not to mention: half my detectors don't take 9Vs.  Read Less

not very good, did not work in my alarm

not very good, did not work in my alarm  Read Less

Simple easy solution. Overall it is something I don't want to think about and Roost helps me not think about it!

Simple easy solution. Overall it is something I don't want to think about and Roost helps me not think about it!  Read Less