Meross
Meross CS11 combined smoke and carbon monoxide alarm, 10-year battery
£15£20
- RRP when new
£29.99save 50%
AvailableNewID SL-047
Meross CS11 combined smoke and carbon monoxide alarm, UK version, in its box. It uses a photoelectric smoke sensor and an electrochemical CO sensor, runs on a sealed-in 10-year CR123A battery and sounds an 85 dB alarm. It is a standalone battery alarm for ordinary rooms, and the box says a screw fixing kit is included. The box has a dent on one side and a worn corner.
Collection: availableDelivery: from £4.50
Buy more, save more: 2 items 10% off · 3 items 15% off · 4+ items 20% offChecked
- Smoke and carbon monoxide in one unit
- Sealed 10-year CR123A battery, no mains wiring
- 85 dB alarm at 3 m
- Meets EN 14604 and EN 50291-1
- UK version, 3-year warranty on the box
Getting it
Free collection, North Ealing, West Ealing or Park Royal
Tracked delivery from £4.50, express £6.50
Paying
Card, Apple Pay or Google Pay through Stripe. Buying two or more? You get a bundle discount and one postage charge.
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Condition & what's included
Condition report
Unused, as bought, often sealed.
- Dent on one side of the box
- Worn corner on the box
What's included
- Alarm in its retail box
Details
- Model
- CS11 (CS11-UK V1.0)
- Colour
- White
- Brand
- Meross
- Smoke sensor
- Photoelectric
- CO sensor
- Electrochemical, 10-year life
- Power
- 3 V CR123A 1600 mAh, sealed in
- Alarm volume
- Over 85 dB at 3 m
- Standards
- EN 14604:2005, EN 50291-1:2018
- Size
- 12.0 x 12.0 x 2.8 cm
- EAN
- 6942349208676
- Size (L × W × H)
- 14 × 14 × 5 cm
- Weight
- 0.25 kg
- Original box
- Yes
- In the box
- Alarm in its retail box
- Condition
- New
- Listing updated
- 30 Sept 2026
Frequently asked questions
Can I see or test an item before buying?
Yes, if you're collecting. Pay online to hold the item, then check it over when you collect. If it isn't as described, don't take it and you'll get a full refund.
Do you offer delivery?
Yes. Most items can be sent by tracked delivery anywhere in the UK. You pay for postage at checkout, so the total you see is the total you pay. Large items are collection only. See Delivery & collection.
What payment methods do you accept?
Card, Apple Pay and Google Pay, processed securely by Stripe. I never see your card details.
Do you do discounts for more than one item?
Yes. 2 items: 10% off · 3 items: 15% off · 4+ items: 20% off, and everything goes in one parcel for one postage charge plus a small amount per extra item.
