First Alert by Resideo

Resideo Technologies, Inc.

In-app purchases

About this app

Take control of your home’s comfort, safety, and water leak detection with the First Alert app. Whether at home or away, this whole home solution lets you monitor and manage your smart home devices. Powered by our family of brands, the First Alert app is compatible across select Resideo, Honeywell Home and First Alert branded products. Plus, integrate with smart home partners to control additional devices in your home. Start connecting to what matters most with the First Alert app.

• Whole-Home Coverage: Manage video, smart smoke & carbon monoxide alarms, select smart thermostats, and water leak detection in one intuitive app.
• Alerts Whether Home or Away: Receive alerts for water leaks, motion, smoke or CO incidents and more, so you’re always connected.
• Trusted Brands: Powered by select Resideo, Honeywell Home and First Alert devices for reliable, trusted performance.

Key Features
• Comfort Control: Manage select Honeywell Home smart thermostats, set schedules, enroll in energy-saving programs to help save on utility.
• Smart Smoke & Carbon Monoxide Detection: Fire safety you trust is now connected and compatible. Add smart fire & CO safety alerts to your home and stay connected whether home or away. Plus, seamlessly integrate with existing Google Nest Protect Alarms* in your home to expand your safety ecosystem or if it’s time to replace.
• Smart Home Awareness Video Offering: Stay connected to First Alert Video Doorbell and Outdoor Cameras with advanced event detection for improved event information (people, pets, vehicles, packages) and notifications.
• Water Leak Detection: Water leaks can happen, and the First Alert WiFi Water Leak and Freeze Detector helps detect leaks early and help prevent damage. Plus, our Water Shutoff Device can be installed by a professional to shut off your home’s water supply when it detects water via the sensor cable or paired with the WiFi Water Leak and Freeze Detector.
• Smart Home Partner devices: Now control additional devices including Schlage smart locks, Kwikset smart locks and Genie garage door openers for ultimate convenience in one app. Plus, integrate with the leading Smart Home Platforms for the ultimate convenience and control.

Expand your home’s protection with our whole home offering. Learn more about our family of connected smart products at Resideo.com/FirstAlertApp
• New to our brands? Download the app and easily add devices with a guided setup.

Ratings and reviews

The app for my S900 thermostat worked well for a couple of weeks with no issues, except that I can't delete old alarms from the day it was installed. I figured out scheduling with only a little difficulty. I like reviewing the run time stats and for the past 3 days it stopped showing that information. Last time it showed the usage is Friday September 11th. No run time stats for Sat, Sun or Mon. Updated the app Tue morning but no change.

works great except the programming. it's difficult using the wake up and when do you leave for scheduling. I just want on and off scheduling. And I'd like to only do it for one day sometimes. It won't let you do that, seems it wants you to commit to a week schedule. so I'm on the app all day. I didn't have that issue with the 20 year old hunter thermostat I replaced. I thought I would be able to set temps as I wanted them to be throughout the day. but no. even the vacation setting was no good

Edit: Apparently some internal setting needed to be changed to make it display humidity again. Weird. Mysteriously stopped showing the current humidity, and no longer lets you manage alerts for humidity. Weirdly, existing alerts still work, but I can't view or change them, I just get notifications when humidity exceeds the threshold I set on they're old app (65%). It's also a little annoying to need the extra click to select the thermostat when it's the only managed device...

What’s new

Bug Fixes.