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Roost 960-00001 RSA-400 Hardwired Smart Smoke/Fire/CO/Natural Gas Alarm

2.8 out of 5 stars 15 customer reviews

Currently unavailable.
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  • 120-Volt hardwired with battery back up
  • 4-In-1 detection, detects fast flaming and slow smoldering fires, Carbon monoxide and natural gas (methane)
  • Fewer false alarms, proprietary microprocessor technology significantly reduces nuisance alarms
  • Requires Wi-Fi, installation of free Roost app on iOS 8 (or higher) or Android 4.2 (or higher) devices, and 120V electrical connection
  • 10 year warranty
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Customer Rating 3 out of 5 stars (15) 4 out of 5 stars (506) 4 out of 5 stars (5991) 4 out of 5 stars (932) 3 out of 5 stars (28) 2 out of 5 stars (85)
Price Unavailable $44.97 $118.99 $28.77 $119.95 $119.95
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping $6.31
Sold By Amazon.com Electronics Jet Amazon.com Amazon.com Great Brands Outlet
Color White white
Item Dimensions 5.63 x 5.63 x 1.75 in 7 x 8 x 2.5 in 1.5 x 5.3 x 5.3 in 6.75 x 8.25 x 2.5 in 5.5 x 1.25 x 5.5 in 5.8 x 1 x 5.5 in

Product description

Product Description

The Roost RSA-400 Smart Smoke Alarm is a Wi-Fi-connected smoke and fire alarm that upgrades the safety and convenience of your home. You can get smartphone alerts if your alarm sounds, and receive low-battery notifications, before the 3 AM chirp starts by connecting downloading the app and connecting it to the device. Even invite friends and family to monitor your alarms for increased peace-of-mind. Smart Alarm Universal Sensing Technology combines benefits of ionization and photoelectric sensor capabilities. Its proprietary technology significantly reduces nuisance and false alarms. 2-in-1 Detection detects fast flaming and slow smoldering fires with Smart Alarm Sensor technologies that combine benefits of both. The RSA-400 uses Universal Smoke Sensing Technology (USST) with microprocessor intelligence to detect fast flaming fires and also respond very quickly to slow smoldering fires – up to 87 percent faster* than the maximum allowable alarm limit. Connects to Wi-Fi in minutes. 120-Volt hardwired with Roost Smart Battery backup.

From the Manufacturer


4-in-1 Detection

Detects fast flaming and slow smoldering fires, carbon monoxide and natural gas (methane).

Alarm Notifications Delivered to you, Wherever you are

Alerts your smartphone whenever your alarm sounds.


End the 3AM Chirp

Lets you know weeks before your alarm battery runs low.

Fewer False Alarms

Proprietary microprocessor technology significantly reduces nuisance alarms.

Convenient and Easy

Install alarm on ceiling, download Roost app, and connect to home Wi-Fi in minutes. 120V hardwired with battery backup.


Alert Your Family and Friends

Unique monitoring feature allows you to invite trusted friends to receive smartphone alerts if your alarm sounds when you are away.


About the Startup

Describe your product in 3 words.

Affordable Smart Smoke Detection

How did you come up with the idea for this product?

We imagined how valuable it could be in people's lives when the everyday things in their home become connected and accessible on their smartphone. Specifically, tapping into that valuable information on a smoke alarm can be particularly impactful and reassuring in people's lives.

What makes your product special?

We offer a smart smoke alarm that is enabled by our Roost Smart Battery. Specifically for consumers that desire a new or replacement smoke alarm with smart features.


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