1M+ happy customers

Emergency O2 Sensor

Home Guard is an easy-to-use CO & gas detector that shows you real-time danger levels - so you can protect your family before it's too later

NOT AVAILABLE ON AMAZON OR EBAY


  • Detects Dangerous CO2 Levels Instantly
  • Incredibly Easy To Set Up & Use
  • 24/7 Continuous Air Monitoring

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Active Fire Fighter Robert L.
Active Fire Fighter Robert L.

Protect your home from fire accidents, giving your family peace of mind.

AS SEEN ON

Stop Fires With These 3 Simple Steps

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1 — Order Your Monitor

Make sure to get one
in every room in your home

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2 — Plug It In

The easy-setup system quickly activates your CO2 Monitor the moment it's plugged in.

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3 — Breathe Easy

The CO2 Monitor instantly alerts you when air quality reaches dangerous levels.

Hear From Families We Have Helped Protect

1,500,000+ Families Protected

J

John D.
- Excellent quality and fast shipping

Verified Purchase

Reviewed in the
United States
on
January 15, 2026
Excellent detector. Easy to use. I plug it into my hall staircase. I like that it has 6 in one functions. Carbon monoxide, fire, smoke, temperature, humidity, and gas. Looks nice while keeping me safe. I also like how you can turn the device so it’s easy to read in the plug that is horizontal.
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42 people found this helpful
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S

Sarah M.
- Great value for money

Verified Purchase

Reviewed in the
United States
on
March 1, 2026
I recently purchased this carbon monoxide detector, and I’m really impressed with its performance so far. The setup was extremely easy — just insert the batteries, mount it on the wall, and it’s ready to go. The display is clear and easy to read, and I appreciate that it shows real-time CO levels instead of only alarming when it’s too late. The test button works perfectly, and the alarm is loud enough to hear from another room, which is exactly what I was looking for. It feels well-built and gives me confidence that my home is protected. For the price, this detector offers excellent value and solid peace of mind.
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28 people found this helpful
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M

Michael R.
- Exactly what I needed

Verified Purchase

Reviewed in the
United States
on
November 20, 2025
Excellent product! I have it in my kitchen, and it works well. There was smoke from some burnt food and the detector sounded to warn me!
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15 people found this helpful
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