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Tools & Home Improvement > Safety & Security > Fire Safety > Combination Smoke & Carbon Monoxide Detectors > B00ZWQHVPE
  1. Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)
    Image(s) provided for illustrative purposes and may differ from the actual product
  2. Smart 9V Battery for Smoke and Carbon Monoxide Alarms (2-Pack)

    Delivery: 10-20 Working Days
    Customer Ratings (139 reviews)
    Price R1607.00


This item may be available in a different size, colour, scent, version or platform. Click below to be directed to product options:

Product Description

  • End the 3 AM chirp, notifies you before battery runs out
  • Replaceable battery lasts 5+ years
  • Installs in less than 5 minutes, no tools or wireless hubs needed
  • Requires iOS 7 or Android 4.2 (or higher) devices, Wi-Fi access and installation of free Roost iOS/Android app
  • Measures 48.3mm, W: 26.3mm, T: 17.3mm
Additional Information

The Roost Smart Battery for smoke alarms transforms your smoke or carbon monoxide alarm into a smart home device just like that. With the same form factor as a conventional 9-Volt battery, the Roost Smart Battery works with existing alarms to upgrade the safety and convenience of your home. Download the free Roost app and get alerts delivered to your Smartphone if your alarm sounds, wherever you are. No more chirps - receive low-battery notifications, before the 3 AM chirp starts. Retrofit your existing alarms without any tools, hubs or installers. Invite friends and family to monitor your alarms for increased peace-of-mind. The Roost Smart Battery lasts for more than 5 years and installs in 5 minutes. No tools, wires, hubs or professionals needed. All you need is a Smartphone and Wi-Fi. This is not your average 9-Volt battery.

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Tools & Home Improvement
2 Pack
1 year limited warranty
Most Helpful Customer Reviews

Vine Customer Review of Free Product (What's this?) I had my doubts about an exorbitantly priced "smart" battery, but I thought I would give it a try, as a Vine reviewer who receives free product to test out.

The very first time I attempted to connect the battery to my iPhone, it failed. As it turned out, this was a harbinger of problems to come, unfortunately. On the second try, the battery did connect properly. I then inserted it into the smoke alarm, and I immediately got an alert on my phone that the smoke alarm was sounding. In fact, it was not, but I disregarded this errant message and did not receive another such message. However, about 30 minutes after inserting the battery into the smoke alarm, we heard the audible "CHIRP" of a smoke alarm with a battery problem. That was nearly the straw that broke my back, but I let it go. Fortunately, we heard no more chirps. I knew the battery was working for each of the first 9 days after I installed it, as the app on my phone indicated the battery was... Read more
Vine Customer Review of Free Product (What's this?) Setup was only a teeny bit complicated. I had to use my iPhone to download the app--the iPad couldn't find the app on the App Store.

The App walks you through connecting it to your WIFI and your phone. You should connect the phone and the Roost close to the smoke detector where it will be installed. I first tried sitting at my dining room table, 30 feet from my router and about 15 feet from the smoke detector, and it wasn't getting enough WIFI to connect. Once I was standing almost underneath the detector, it worked fine. You don't want to do this while you're standing on a ladder, either. Barking dogs and chatty children/spouses should be moved out of the area while the phone imitates a 2400 baud modem (the memories...) to link with the battery.

Husband removed the First Alert 9120B detector from the ceiling in our great room and installed the Roost battery. He had some issues squeezing it into the battery compartment, but between wiggling, filing a teeny bit of... Read more
I installed a Roost Smart Battery 5 days ago. Now, my iPhone displays the battery is "Offline." The Customer Support page on the manufacturer's website doesn't offer any information about this problem. To make matter worse, the Smoke/CO detector that contains this brand new Roost battery started chirping.
Update: I removed the "Offline" Roost batteryfrom the Smoke/CO detector and replaced it with a conventional 9 Volt battery. Several minutes later, the disconnected Roost battery started emitting a low beep, approximately every 5 minutes. Interesting how it goes "Offline" when placed in the smoke detector and keeps beeping after it is removed and disconnected.
Please Note

The authorised South African distributor of this product is under no obligation to honour the manufacture's guarantees/warranties or to provide after-sales service.

Please note that this item is imported from the USA, and is designed to be used in the USA. In addition, if the unit is powered it will come with a US plug and an adapter/transformer may be required. Please click here for more information on power requirements, or check with us if you are unsure or need any assistance!

Please also note that certain items cannot be imported, these include Alcohol, Animals, Batteries, Flammable Materials, Currency, Food, Furs, Chemicals, Explosives, Medications, Plants, Seeds, Supplements, Pressurized Cans, Tactical Equipment, Vitamins, Weaponry and Weaponry Accessories. In these cases, the item and information is displayed for reference purposes only. If you are not sure if we are permitted to bring an item, please send us an e-mail with a link to the item to confirm.

Please also ensure that you are ordering the correct item for your particular application as returns to the USA are costly. Product reviews are also provided for most of our items, which can give you a good idea for possible things to look out for and the quality of the item. By clicking Add to Cart, you are confirming that the item is correct and you accept the conditions listed here.