Recessed smoke alarm sensors

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We have just fitted some Hochiki recessed fire alarm sensors
see http://blog.household-automation.co.uk/2014/03/slimline-smoke-sensors/

[avrilisa9]

Hello, I just want to know that which type of alarm sensors are good smoke or a fire alarm sensor.


Note
This is a spammer

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If you follow the link to the HA blog then it gives all the information including part numbers.

[juwi_uk]

Looks nice though if it were me I\'d worry, given that they probably have a 10 year lifespan, I\'d have some big holes to plasterboard over in in 10 years time when I cant get the same replacements again to fit in those voids! 

Or are they an industry standard size?

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We also fit non Hochiki CO sensors in the same recess base so I think most circular sensors would fit.

[johnlynch]

hi
you may find the best safety alarms through this url https://www.safetydirect.ie/835/Fire-Ala...Bells.aspx