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Keep your family safe with this easy to use digital-display, 10-year battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there’s a power failure
Easy-to-read backlit digital display shows temperature and CO concentration; Peak Level feature displays the highest concentration of carbon monoxide measured
Built-in 10-year lithium battery offers continuous protection for the life of the carbon monoxide detector
A loud 85-decibel alarm sounds when CO levels reach dangerous levels
10-year limited warranty; Equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety
All first alert CO alarms are rigorously tested to meet UL standards
First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
First Alert warranty extends ten years from the date of purchase with proof of the original sales receipt and the product should be free from defect in material and workmanship
13 reviews for First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display , White
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$32.99

Michael E Banks –
Worth Every Penny
Simple to install, works extremely well and the size fits almost anywhere. If something saves your life, is it a good value for the money, you bet it is! Peace of mind enough to move into a place without Carbon Monoxide threat. It’s a bonus that it’s also a room thermometer.
ImWithStupid –
Accurate thermometer – just takes a while.
A lot of people were complaining about the thermometer feature on this thing being inaccurate. It was certainly higher than it should’ve been when I first unboxed it, but sitting in my room for a day it’s now showing the exact same temperature as my thermostat. Not an instant read thermometer by any means, I put it above a stove and it took at least 30-40 seconds to climb up just one degree. But from my experience it’s certainly accurate enough.Oh yeah, and it’s probably a great CO detector too. Plenty loud for sure.
Squid & Jelly’s Great Adventure –
Essential Travel & Home Safety – Reliable Carbon Monoxide Protection Anywhere!
We never travel without this carbon monoxide detector! Most places we stay don’t have one, so we always bring our own. On our Leopard 40 catamaran, we keep one in every cabin plus the salon and galley, and we also take one along when staying in Airbnb or Vrbo rentals.The one time we didn’t bring it was while hiking Acatenango in Guatemala. After a 7-hour climb to base camp, we were freezing and exhausted when our guide lit a fire. Smoke filled the tiny hut and we woke up with splitting headaches -classic carbon monoxide exposure. That scary moment taught us a lesson: no matter where we go, even up a mountain, this detector comes with us.The battery lasts a long time, the digital temperature display is a great bonus, and the alarm is loud enough to wake you immediately. Durable, reliable, and truly a must have for safety at home, on a boat, or while traveling. Highly recommend!
Customer Review –
Works, but isn’t a replacement for the old model
I moved into a very old house with very thick concrete walls, making drilling frustrating. The home I purchased came with the previous model of this detector. I saw mixed messages about whether the screws were aligned the same as the old model. Unfortunately, I found out that the screws are off by just the tiniest amount and won’t fit on the old ones. It’s kind of maddening that First Alert did this. I would love to just know why. Why frustrate customers like this?I am still using the new model, but I have it sitting on a shelf. This model of detector is great for those of us with old homes who can’t drill into the wall. I like the unit itself. It stands on a shelf easily and it’s unobtrusive. I like that it has the air temperature displayed and it has an overall modern look.I still recommend this item. Just don’t buy this unit thinking that you can use the screws from the old model.
Erin C –
Works well
We bought these for our rental properties. We actually ordered multiple times. Good quality, easy to install and affordable.
GR –
Perfect for travel
Perfect size for travel and has an off switch for when it’s in my backpack. Plus, the battery is built-in, so no need to pack batteries. Doubles as an extra detector when home.
Neha Srivastava –
This product saved my life
I love this CO detector and saw it in action yesterday when it loudly beeped to warn me of dangerous levels of CO in my home. This winter I decided to use my fireplace and accidentally didn’t open the fuel hatch in the chimney. Completely my fault but within 5mins of me lighting the log on fire the alarm beeped warning me of CO in my house even before smoke started wafting. Thankfully, no damage was done and no one was hurt. I was able to very swiftly turn off all air conditioning, open doors to let the chill air in and extinguished the barely started fire. I am so thankful for this product and urge everyone to have one installed in their homes in addition to a fire alarm. The product also shows the current levels and you can monitor that as well. The design is sleek and is easy to install and use.
wayne rutledge –
First alert is quality product
Tests out ok, should work as described. Check back in ten years.
Len Berg –
The detector is exactly as advertised with clear instructions for the simple installation. Even the fasteners are included. The 10 year life battery is a welcome feature.
Observation123 –
This is a quite small (5″ x 2.5″) and nice looking carbon monoxide detector that can be unobtrusively put on a dresser or hung on the wall. It shows the temperature all the time, but not that the CO is at zero which I wish it did to ensure it’s doing its job properly, the only reason for a 4 vs 5 rating. Other than that, it’s fine.
Doug Slupski –
Works great. Being powered by a long life battery you can place it anywhere you want it.
Brian –
Just bought three of these to replace outdated plug in style CO alarms.Nice compact size with clear displays and easy to read warnings, should we ever have CO incident!!While the thermometer function is only a “nice to have” and not critical to the function, this item should have the ability to switch between Fahrenheit and Celsius to be sold in Canada.The description doesn’t clearly state this limitation and neither does the instruction booklet. The LCD has an element for C but there is no way to make the switch.
JJ –
I am pleased with this item.