Best Smoke & Carbon Monoxide Alarms — Mains-wired + Mid-range (2026)
1 smoke & carbon monoxide alarms matching connectivity “Mains-wired” + price tier “Mid-range”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Kidde 7DCOC Carbon Monoxide Alarm, White vs FireAngel FA6120-INT-T2 Smoke Alarm Detector, White: Which Smoke & Carbon Monoxide Alarms Is Better? guide.
#1 Pick
Aico Ei3028 Mains Powered Multi-Sensor Heat & Carbon Monoxide AlarmRated 4.7 out of 5 stars (227)
- Mains-wired
- 5 years
£63.99
Pros
- Combines heat and CO sensing in one mains-powered unit
- Rechargeable lithium back-up keeps it working in a power cut
- Energy Class A+ rated
Cons
- Mains wiring installation, not a simple battery unit