Dose this unit have a relay output on board

I haven't looked but they are only designed for a stand alone device. They wouldn't bother the extra cost of a relay

How do I attach to the ceiling?

Inside the box you will find some screws and also some plastic plugs. Step 1: Look at the alarms mounting base. Find where the screws will hold the mounting base onto the ceiling. These are usually holes that are shaped like an old-fashioned keyhole. Step 2: Hold the base plate of the alarm against the ceiling and use a pencil to make 2 marks on the ceiling, at the locations where you need the screws to go into the ceiling. Step 3: Set up your drill by inserting a drill-bit which is slightly smaller in thickness than the plastic plugs your alarm came with. Now, drill holes in the ceiling where you marked with the pencil. Step 4: Use a hammer to tap the plastic plugs into/inside the holes you have made. If the holes are too tight, use a slightly bigger drill-bit. But, don't make the holes too big or the plastic plugs will just fall out. Step 5: Hold the plastic mounting base onto the ceiling with one hand. With the other hand, use a screw and screwdriver to attach the mounting base onto the ceiling by screwing the screw into the plastic plug (which you just tapped into the ceiling using the hammer in the previous step.) Repeat this for the other screw. The screws in the ceiling should now support the mounting base of the alarm and hold it against the ceiling. Ensure the screws are tight, but do not tighten them too much or you will break/bend the mounting plate. Step 6: Now put the alarm itself onto the mounting plate on the ceiling. You may need to read the manufacturers instructions on how this procedure is done.

If i wanted to buy a new one, could i use an existing base plate. Father recently died and wanted to just replace base plate once and swap them round

If the old alarm is the same model as this one (10Y29) then yes, you can re-use the old base plate.

Is this suitable for kitchen containing gas boiler?

It is suitable for use in a kitchen. It is also best to have a heat alarm in the kitchen and a carbon monoxide alarm at least 1 metre away from your gas boiler but no more than 3 metres away.

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🔥 Stay safe, stress-free, and stylish for 10 years! 🔋

TWIN PACK VALUE - Two alarms in one package to cover multiple rooms or floors with ease.
SLEEK DISCREET - Modern circular design fits seamlessly into any home or office aesthetic.
TRUSTED SAFETY BRAND - Kidde’s proven reliability keeps your space protected and compliant.
EFFORTLESS INSTALLATION - Comes complete with mounting bracket and screws for a hassle-free setup.
DECADE LONG PEACE OF MIND - Forget battery swaps with a 10-year sealed lithium power source.

The Kidde 233045 10Y29 RB Smoke Alarms 2 Pack features a sealed lithium battery with a 10-year lifespan, eliminating the need for battery changes. Designed with a compact 10.4 cm circular shape, it includes all necessary mounting hardware for quick installation. This twin pack offers reliable, long-term smoke detection from a trusted brand, perfect for modern homes and offices.

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Manufacturer	Kidde
Part Number	233045
Batteries	1 Lithium Metal batteries required. (included)
Item model number	233045
Size	2 Units
Colour	White
Style	Twin Pack
Material	Plastic
Shape	Circular
Power Source	Battery Powered
Item Package Quantity	1
Cutting Diameter	10.4 Centimetres
Included Components	2 x Smoke Alarm, Battery, Fixing Screws, Manual, Mounting Bracket
Batteries included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Metal
Assembled Diameter	10.4 Centimetres
Item Weight	134 g

Kidde 233045 10Y29 RB Smoke Alarms 2 Pack 10 Year Battery Life

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