Compare British General SDMHA Mains Interlinked Interconnecting Heat Alarm Prices | Compare The Build

Login / Register

Menu

Login / Register My Projects

Menu

Services

Domestic
Commercial

DIY Guides

Article Guides
Video Guides

Categories

Building & Hardware

Building Material Suppliers

Additives & Chemicals Aggregates & Sand Block paving Bricks & Blocks Concrete & Cement Coving Guttering & Drainage Insulation & Damp Jointing compound Joist hangers Levelling compound Lintels Metalwork Plasterboard Plastering Supplies Pothole repairs Render Roofing Supplies Soffit & fascia View All

Door Supplies

Conservatories & sunrooms Door frames & fixtures Door handles Door locks & hatches Door numbers External Doors Garage Doors Internal Doors Letterbox Loft Doors & Hatches Porches Windows View All

Hardware

Bolts, nuts & washers Brackets Fixings & Wallplugs Furniture hardware Handles & knobs Hinges Hooks House numbers & plaques Locks & padlocks Nails Ropes, bungees & chains Screws View All

Timber Sheet Materials

Architrave CLS Studwork Timber Constructional timber Decorate mouldings Furniture boards Loft boards Modular flooring Planed Square Edge Timber Plywood Scaffold boards Sheet materials Skirting board Stairs & stair parts Treated Timber Window boards View All
Tools & Workwear

Construction Tools

Air compressors & tools Car care & maintenance Cement & paddle mixers Ladders & Steps Site lighting Tarpaulins, sheets & sacks Tool Storage Tool storage Torches & worklights Trolleys & carts Vacuums & Cleaners Wheelbarrows & Hand Trucks Workbenches & trestles View All

Hand Tools

Brick Bolsters & Chisels Bricklaying tools Cable tools Clamps Crowbars Cutting tools Demolition Fixing tools Garden Hand Tools Hammers & Axes Hand Saws Knives & Cutters Measures & levels Nailers & staplers Pipe Cutters Plastering tools Pliers Post Hole Diggers & Post Drivers Screwdrivers & keys Shovels, Spades & Rakes Spanners & wrenches Tool Kits Trowels, Hawks & Floats Woodworking tools View All

Power Tool Accessories

Angle grinder disks Chucks, keys & holders Drill bits Flat Wood Bits Holesaws Mixed drill bit sets Multi tool accessories Power Tool Stands & Storage Routing Sanding Sawing & Blades Screwdriver bits View All

Power Tools

Angle grinders Chop saws Circular Saws Drills & Impact Drivers Grinders Impact drivers & wrenches Jigsaws Kits & twinpacks Mitre, Table & Flip Saws Multi Tools & Hobby Tools Nail Guns Planer Power tool kits Radios Reciprocating Saws Routers Sanders Saws Screwdrivers Workshop machinery View All

Workwear

Dust masks Goggles & Glasses Hoodies & sweatshirts Knee pads Overalls & coveralls Pest Control Safety Boots Safety Gloves Safety Hats Safety Masks Safety trainers Traffic control Van vault Work jackets Work lights Work shorts Work trousers View All
Painting & Decorating

House Paint

Interior Emulsion Spray Paint Tile paint View All

Paint

Anti mould paint Chalkboard paint Door paint Emulsion paint Exterior & Masonry Paints Fence paint Floor paint Furniture paint Garden furniture paint Gloss Paints Kitchen paint Paint samples Primers & undercoats Radiator paint Specialist Paints Spray paint Thinners & solvents Wood & Metal Paints View All

Painting Tools

Dust sheets Expanding foam Fillers Glues & adhesives Paint brushes Paint pads Paint rollers Paint Sprayers Paint stripper Paint trays Roller Trays & Kits Sandpaper Sealants Tapes View All

Tiling & Flooring

Grout Scotias & Floor Trims Skirting & Architrave View All

Wallpaper

Lining paper Murals Sticky back plastic & window film Wallpaper Wallpaper Paste Wallpaper tools View All

Woodcare

Wood oil Wood preservatives Wood varnish Wood wax Woodstain View All
Flooring

Floor Accessories

Grout Thresholds & Reducers Tile Trims Underlay View All

Floor Tiles

Bathroom Tiles Ceramic Tiles Floor Tiles Kitchen Tiles Mosaic & border tiles Outdoor tiles Porcelain Tiles Sample tiles Tile Backing Boards Wall Tiles View All

Flooring Supplies

Carpet Tiles Door mats Engineered Wood Flooring adhesives Flooring samples Flooring Threshold Bars Laminate Luxury vinyl click Sheet vinyl Solid wood Vinyl flooring Vinyl Planks Vinyl Tile View All

Flooring tools

Thresholds, tbars & reducers Underlay View All

Tiling tools

Adhesive Grouting tools Tile cutters Tile kits Tile spacers Tile trims Tiling trowels View All
Gardening & Landscaping

Fencing

Chainlink Fencing & Wire Netting Composite Fencing Fence & decking treatments Fence panels Fence post support Fence posts Fencing accessories Garden gates Garden mesh & netting Gravel boards Lattice Panels Pressure Treated Lap Panels Trellis & screening View All

Garden Buildings

Arches & arbours Garden bar Garden rooms Garden storage Greenhouses Growhouses & cold frames Log Cabins Metal Sheds Plastic Sheds Playhouses Shed Base Sheds Summerhouses View All

Garden Furniture

BBQ Camping Garden Furniture Sets Garden Heating Garden ornaments Garden parasols Garden seating Garden Sofas & Lounge Sets Gazebos Hot Tubs Pizza ovens View All

Garden Tools

Chainsaws Garden power accessories Garden shredders Grass Trimmer Hedge trimmers Lawnmowers Leaf blowers & vacs Pressure washers Scarifies & tillers View All

Landscaping Supplies

Bark Composite Decking Compost Decking Fertilizer & plant food Fire pits Garden accessories Garden edging & log rolls Garden sleepers & bed kits Garden toys Hand tools & equipment Houseplants Lawn care Patio heaters Paving & walling Pergolas Plants & seeds Pots & planters Stone gravel & chippings Swings & slides Turf & artificial grass Water butts Watering hoses & ponds View All
Heating Supplies

Air Purification

Air Conditioners Air Purifiers Ceiling Fans Cooling Fans Dehumidifiers Ducting Extractor Fans Vents & Grills View All

Central Heating Systems

Boilers Central Heating Controls Heating Treatments Pipe Insulation Underfloor Heating Water Heaters Water treatment View All

Heaters

Electric Fires Fire surrounds Fireplace accessories Fireplace suites Gas Fires Logs & Firewood Portable Heaters Storage heaters Stoves View All

Plumbing Supplies

Air source heat pumps Bathroom fittings Elbows Flexible connectors Macerators Pipe Pipe fittings Plumbing tools Shower pumps Sinks Toilet fittings Toilet spares Valves & stopcocks Waste & traps View All

Radiators

Cast iron radiators Central Heating Radiators Designer radiators Electric radiators Heating elements Radiator covers Radiator valves Towel Radiators Vertical radiators View All
Kitchen & Bathroom

Bathroom Supplies

Accessories Accessories Assisted living bathroom Basins Bath panels Bathroom accessories Bathroom Mirrors Bathroom suites Bathroom wall panels Baths Cloakroom Basins Countertop Basins Furniture & cabinets Pedestal Basins SemiPedestal Basins Taps Toilet seats Toilets Vanity units WallHung Basins View All

Home Appliances

Cooker hoods Cookers Dishwashers Freezers Fridge freezers Fridges Hobs Kettles Kitchen Plinth Heaters Microwaves Ovens Tumble dryers Washer dryers Washing machines Wine coolers View All

Kitchen Supplies

Bar stools Cabinets Flat Pack Kitchens Kitchen accessories Kitchen bins Kitchen cabinets Kitchen cupboard hinges Kitchen doors Kitchen Handles Kitchen paint Kitchen sinks Kitchen storage & accessories Kitchen taps Kitchen tiles Kitchen worktops View All

Showers

Bath shower screens Curtain rails & rods Digital Showers Enclosures & doors Riser rails Shower curtains Shower heads Shower hoses Shower kits Shower panels Shower trays Showers Wet rooms View All
Electrical & Lighting

Electrical Supplies

Batteries & chargers Cable management Consumer units & breakers Door bells Electrician tools & supplies EV charging Extension leads & reels Junction boxes & connectors Networking & broadband Switches & Sockets Trunking, conduit Tv aerials Wiring cables View All

Home Security

Bike locks Burglar alarms CCTV cameras Door locks & latches Fire extinguishers Gate locks Key safes & cash boxes Motion sensors Padlocks Safes Safety signs Smoke alarms View All

Indoor lights

Ceiling lights Childrens lights Floor & table lighting Floor lamps Lamp shades Light bulbs Light fixtures & fittings Spotlights & downlights Strip & rope lighting Table lamps Wall lights View All

Outdoor Lights

Decking lights Garden string lights Lanterns Security lights Spike lights Wall Lights View All

Smart home

Smart alarms Smart cameras Smart door bells Smart door locks Smart heating Smart light bulbs Smart plugs View All

Compare thousands of DIY and building products

Compare thousands of DIY and building products

Compare thousands of DIY and building products

Compare thousands of DIY and building products

British General SDMHA Mains Interlinked Interconnecting Heat Alarm | Compare The Build

Add to Project Tell me when the price changes

British General SDMHA Mains Interlinked Interconnecting Heat Alarm

Mains-powered heat alarm 9V battery backup. Alarm can be hardwire interlinked with other BG alarms. Connect up to 24 heat and smoke alarms, or up to 12 alarms when including a CO alarm. Suitable for use in kitchens, attics and garages.

Brand Name	British General
Manufacturer Model No	SDMHA
Alarm Sensor Type	Thermistor
Alarm Triggering Temperature	54 °C
Power Type	Mains-Powered with Battery Backup
Interlinked Compatibility	Alarm can be hardwire interlinked with other BG alarms
Suitable Room Type	Suitable for use in Kitchens, Attics and Garages

Best Prices

Screwfix

£53.99

Best Price

Visit Site In stock

The prices shown are available online and may not reflect in store. Confirm prices before visiting store.

Map View

You may also like

HOMCOM Adjustable 4 Wheel Rollator with Seat Folding Walker Price Comparisons | Compare The Build

HOMCOM Adjustable 4 Wheel Rollator with Seat Folding Walker

£78.99

Cheapest at The Range

View Product

IR Infrared Hub Distribution System 2 Sources 4 TV s Remote Control Extender Price Comparisons | Compare The Build

IR Infrared Hub Distribution System 2 Sources 4 TV s Remote Control Extender

£132.49

Cheapest at B&Q

View Product

Casambi Wireless Mesh Mid Range PIR Detector Price Comparisons | Compare The Build

Casambi Wireless Mesh Mid Range PIR Detector

£143.12

Cheapest at City Electrical Factors

View Product

Smith & Locke Water-Resistant Combination Portable Key Safe Price Comparisons | Compare The Build

Smith & Locke Water-Resistant Combination Portable Key Safe

£14.99

Cheapest at Screwfix

View Product