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I'm in Canada, and I'm not aware that I'm required to have smoke detectors at all in my residence, but I do get a break on my home-owners insurance for having them. I think maybe new builds are required to have wired detectors, but my house dates from the 60s, so it would require a retrofit in any case.
Are you saying that a 15th C cottage in the UK needs to be retrofitted with mains wired smoke detectors?
My battery operated smoke detectors have a sticker saying "replace in 2020", at which point I'm guessing the smoke-detecting ability has degraded beyond any usefulness. Assuming that wired-in detectors have the same issue, do you have a replaceable detection unit, or do you need to wire-in a new unit? Either way, will they start chirping in the middle of the night to let you know that the detector needs replacing?
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No, but if you have a rewire or anything that requires a certificate from an electrician they have to fit wired in smoke detectors
We can’t stop here, this is bat country - Hunter S Thompson RIP
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reading through the comments took me a moment to realise the nesting of the comments were seperate:
dandy72 wrote: My mod was to get a wired mouse again.
pkfox wrote: If you are in the UK they should be mains wired
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I'm not sure if wired-in is a universal requirement in the USA, but it is in my county.
Mine are wired in -- currently the backup batteries are typically warrantied for 10 years, after which the unit should be replaced.
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Here in Norway I have never seen anything but battery driven smoke detectors in private homes. And you are required to have at least one on each floor (in every housing unit if there is more than one).
The smoke detectors are required to warn you long time before they run out of power; I believe the requirement is a minimum of two weeks.
If you have more than one smoke detector, you are not required to interconnect them, but it is highly recommended. My previous set of detectors was made for wired interconnection, but before I got myself up to actually stretch the wires, the detectors were ready for replacement. My next (i.e. current) set of detectors don't need any wiring, they have wireless interconnection.
There was some discussion, maybe a year ago, after lots of media reported on a study showing that you should never keep the door to bedroom open while you sleep: If there is a raging fire in the corridor outside your bedroom, a closed door can hold it back from your bedroom for the few second it takes you to escape from the bedroom e.g. through the window. But the study failed to point out that if your home is properly equipped with interconnected smoke detectors, you would be awakened by a siren several minutes earlier, with a fair chance to stop the fire before it develops, and certainly before the raging flames reach your bedroom door. ... So I still sleep with my bedroom door open!
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smoke detectors? We don't need smoke detectors.
If you can keep your head while those about you are losing theirs, perhaps you don't understand the situation.
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This is a huge coincidence, but just last night I went to bed and I noticed the small light from the smoke detector (it's there, but I'm not very aware of it) and I thought to myself "That's been hanging there for years, when's the battery going to run out? Probably somewhere in the dead of night..."
I've slept through smoke alarms in the past (luckily just my dad testing the alarm)
I'm about 10 years older now, so I'm not sure if I'd still sleep through it... Stress makes you sleep lighter 
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Sander Rossel wrote:
I've slept through smoke alarms in the past (luckily just my dad testing the alarm)
An alarm located in the same room as you were sleeping? Are you sure that smoke detector satisfies the requirements for sound pressure level?
If your daddy's testing was just a quick press of the test button, causing a short sound of a second or two, I certainly believe that a kid in deep sleep may not wake up. But if it goes on, has the required intensity, and the alarm is located in the room where you sleep, then if you don't wake up and I was you dad, I would certainly get you awake and get out of you how many beers you had last night 
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Because the last time you replaced the battery was at 2:30 AM several months ago.
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Because you can hear it chirping way better when the house is quiet.
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A head-banging robot would be amusing to see.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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It's embarrassing how AI interprets samples of music  .
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Oh my … that's close, but I got a laugher as it feels "wrong". Perhaps it's my impression only, as the imitation is incredible, but I think this AI tries too much to be impressive and this causes a lot of fun … at least in my head ...
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That's actually pretty awesome-ish
It went from pretty erratic technical death metal to some sort of ambient noise
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Is a photo finish the office party selfie that ended your marriage?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Your statement captures it all.
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You seem to be going through a rough patch Griff. Stay focused mate. Stay focused.
"If we don't change direction, we'll end up where we're going"
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It's the millenial's idea of a money shot. Confusion about just what is a 'selfie stick' is part of this (don't think 'unbaked Anethum graveolens bread precursor'*, whatever you do).
* replacing perfectly satisfactory word of historical significance.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
modified 25-Apr-19 11:53am.
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W∴ Balboos wrote: don't think '█████', whatever you do
FTFY
"If we don't change direction, we'll end up where we're going"
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Possibly not KSS - there are some serious prudes here!
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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But honestly - have you ever heard a better analog for a selfie-stick?
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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I guess we must ban the word ██████-█████ too!
"If we don't change direction, we'll end up where we're going"
modified 25-Apr-19 11:19am.
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I am going to refrain from commenting on selfie-stick users ... given where we are.
I'd edit out that bit if I was you.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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