Skip to content

Hurry, the big you can do it sale ends midnight on 5 May! Shop unmissable deals online & in store now

B&Q Club
Customer support
Sell on diy.com

For delivery & collection optionsEnter your postcode
Wish list
Register
Sign in

Start typing your search to have a list of suggestions.

Big You Can Do It Sale
Garden & Landscaping
Painting & Decorating
Building & Hardware
Home & Furniture
Tiling & Flooring
Kitchen & Appliances
Bathroom & Showers
Lighting & Electrical
Tools & Equipment
Heating & Cooling
New & Trending

B&Q Club
Customer support
Sell on diy.com

For delivery & collection optionsEnter your postcode
Wish list
Register
Sign in

Click + Collect now in as little as 15 minutes*

*Restrictions apply

Free delivery on 1000s of products

Selected products/locations

90 day returns policy

Join B&Q Club

Save up to £100 a year▲

See more Alarm accessories

Home
Electrical & security
Home security & safety
Alarm accessories
Alarm sensors

Alarm sensors

Applied filters(2)

Battery name

CR2032

Price

£20 - £30

Categories

See more Alarm accessories

Filters

Width (mm)
Brand
- Shelly(1)
- Yale(2)
Battery name
Smart
- Not smart(1)
- Smart(2)
Sold by
- B&Q(2)
- Verified seller(1)
Click + Collect and Home Delivery options
- 15 minute Click + Collect(2)
Price
Rating
- 3 stars
  (1)

3 products

Compare

SortSort by

Yale Sync Wireless Door Contact sensor
3.76 stars
(13)
£30
Available for Home Delivery
Available for Click + Collect
Available in selected stores
Yale Sync Wireless Door & window Alarm contact sensor
£29
Available for Home Delivery
Available for Click + Collect
Not available in stores
Shelly BLU Bluetooth Operated Door/Window Sensor White
£23
Available for Home Delivery
Not available for Click + Collect
Not available in stores

Showing 3 of 3 products

Business

B&Q corporate
Careers
Media centre
Responsible business
Modern slavery act
Business services
Affiliate program
B&Q Ireland
The Way We Live Now: 2025

Services

View all our services
B&Q club
B&Q finance
B&Q gift cards
Planning appointments
WEEE recycling
B&Q bulk delivery
Our installation service
Energy Saving Service

Products

Green star
Our own brands
B&Q app
Product information
Product recalls & safety notices
Health & safety data sheets
Become a B&Q verified seller
New at B&Q
Promotional terms & conditions
B&Q Marketplace

Help & Support

Ideas & advice
Customer support
Home delivery
Free Click + Collect
Returns & refunds
Brochures
Paint brochures
Store finder
Become a B&Q approved installer
Intellectual Property (IP) Infringement Claims form

Partner Sites

Rubbish clearance
California shutters
Made to measure blinds
NeedHelp
Spacepro made to measure wardrobes
BOXT boilers
BOXT air conditioning
TradePoint

© B&Q 2025

Terms & conditions
Privacy policy
Contact us