We didn't personally test this model, but we've had great experiences with other First Alert models and feel confident in recommending this one. Types of smoke detectors Battery-powered units ...

However, while most detectors ... test smoke detectors, exposing them to flaming fires and smoldering, smoky fires to see how well they handle both. Most detectors need to be hardwired, battery ...

Some battery-operated units may beep or light up at this point, so don’t let that startle you. Step 6: Power up and test your ...