The Good If you can introduce a battery, you can introduce the Roost Smart Battery into your current smoke identifier, and it will dependably send you push warnings when your caution sounds. Both the battery and the application are appealingly outlined and simple to utilize.The Bad Roost offers the alternative to “rest” your caution, however that won’t work if your alert is hardwired and the 9V is going about as a reinforcement. Perch doesn’t offer any interconnectivity to other shrewd gadgets. The Bottom Line You won’t get the same number of smarts with the Roost Smart Battery as you would with a discount associated substitution, however at $35, it’s a suitable and savvy alternative for basic, retrofit smarts.While fund-raising on Kickstarter in 2014, a major piece of the lift pitch for Roost – a startup situated in Sunnyvale, California – was that its Wi-Fi-empowered smoke alert battery would everlastingly expel the center of the night “low-battery peep” that is the bad dream of property holders and loft inhabitants all over the place. Does the Roost convey? All things considered, we won’t know whether its cell phone based low-control notifier works at any point in the near future, since its battery life is evaluated at five years. In any case, we can reveal to you that the $35 unit – which replaces the 9-volt battery in your standard smoke or carbon-monoxide locator – functions admirably on almost all different records, conveying notices to your cell phone wherever you are the point at which a smoke or CO occasion is identified in your home. At $35, it’s a less demanding spend too much than the comparatively pointed $100 Nest Protect , and a more cost-accommodating approach to tidy up your entire home of indicators also. The Roost Smart Battery isn’t as brilliant or highlight rich as the Nest Protect 2.0, so it’s not the ideal choice for everybody, particularly not those hoping to assemble an interconnected savvy home as Nest plays better with others. Be that as it may, for those searching for fundamental availability without issue, I like the Roost Smart Battery. It extremely just completes a certain something, yet that is all it’s promising, and it satisfies that guarantee with clean and energy. Administering the Roost I found the Roost Smart Battery invigorating in a couple of ways. It’s not showy, but rather it is alluring. It didn’t need to be appealing, since you’ll never observe it once you stick it in your smoke finder, however I valued the touch.