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What Are the Best Smoke and CO2 Detectors? Smart Protection for UK Homes & Businesses

white smoke against black background

Jo Bebbington |

Every year in the UK, house fires and carbon monoxide leaks lead to thousands of emergencies, and sadly, many of them are preventable with the right early warning systems.

That's why choosing a reliable smoke and CO2 detector isn’t just a box-ticking exercise - it’s a decision that could save lives.

In this guide, we’ll show you:

  • Why smart detectors like Ajax FireProtect offer superior protection
  • What to look for in a detector
  • The best smoke and CO detectors available from WME today
white ajax smoke alarm

🚨 Why Every UK Home Needs Smoke & CO Detectors

According to Electrical Safety First, fires caused by electrical faults are one of the leading risks in UK homes. And carbon monoxide poisoning, often dubbed “the silent killer,” accounts for over 200 hospitalisations per year in England alone (NHS).

That’s why UK fire safety regulations require landlords and homeowners to fit smoke alarms and CO detectors in most properties.

But not all alarms are created equal.

🔍 What to Look For in a High-Quality Detector

When choosing a smoke or CO2 detector, here are the essentials:

✅ Dual sensors for fire and gas (optional but recommended)

✅ Loud alarm (85dB or higher)

✅ Tamper detection

✅ Long battery life (5+ years)

✅ Smart notifications via app

✅ Integration with other alarms or security systems


⚡ At WME, we recommend Ajax FireProtect for its combination of fire, smoke, and heat detection - plus remote alerts via smartphone.

🔥 The Best Smoke & CO2 Detectors Available at WME

1. Ajax FireProtect – Smart Smoke & Heat Detector

AJAX FIREPROTECT 2 AC (HEAT/SMOKE) BLACK

Key Features:

  • Detects smoke and rapid temperature rise
  • Sends instant alerts to your phone via the Ajax app
  • Loud internal siren (85 dB)
  • Built-in tamper protection
  • Battery life: up to 4 years
  • Wireless – no cables, ideal for retrofit or new builds

✅ Perfect for: Homes, flats, offices, outbuildings

2. Ajax FireProtect Plus – Smoke, Heat & CO Detector in One

Upgraded model with an integrated carbon monoxide sensor.

Ajax Smoke alarm white

Key Features:

  • Detects smoke, heat and CO
  • Alerts multiple users simultaneously
  • Works independently or as part of Ajax alarm system
  • Battery life: Up to 4 years
  • Compact and modern design

✅ Best for: Bedrooms, kitchens, gas boiler rooms, and garages

📲 Why Smart Detectors Are Worth the Upgrade

Traditional alarms are only useful if someone hears them. But what happens if you’re away?

  • With smart smoke and CO detectors like Ajax, you get:
  • Real-time alerts straight to your phone
  • The ability to alert multiple family members or tenants
  • Integration with your broader security system (e.g. automatically turning off gas valves or unlocking doors during a fire)

❓FAQs

Q: Do I need a carbon monoxide detector in every room?
Not necessarily, but you should have one in or near rooms with gas appliances or fireplaces.

Q: How do I test the Ajax smoke alarm?
Use the built-in test button, or test remotely through the Ajax app.

Q: Can I use FireProtect without the Ajax hub?
Yes - it works standalone. But app features and multi-device syncing require the Ajax Hub.

Q: Is installation difficult?
Not at all. They come with sticky pads or screws, and the whole system is wireless and DIY-friendly. 

If you’re serious about protecting your home or business, a basic smoke alarm won’t cut it anymore. With Ajax FireProtect and FireProtect Plus, you get reliable fire and CO detection, long battery life, and the added bonus of smart alerts - all in one sleek, wireless package.

🛒 Browse the full range of smart detectors in our Ajax Alarms Collection
 🎯 Stay safe, stay smart, and give your property the protection it deserves.

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