Questions tagged [smoke-detectors]

Device for detecting smoke and/or fire.

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1answer
38 views

Hard-wired smoke detector chirps when light switch flipped

I have a hard wired smoke detector that is connected to the same circuit breaker as the two hallway lights. The two switches at the end of the hallway do not turn the smoke detector on and off, ...
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4answers
126 views

Why is a smoke alarm chirping at specific times of the day?

I have a smoke alarm (Kiddie) that is beeping regularly (every 30 seconds or so), what I would typically associate with a low battery. The strange thing is that the beeping is only happening between 5 ...
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1answer
43 views

Signalling a smoke alarm from interconnected (hardwired) detectors to an alarm panel

IMPORTANT NOTE: When reading the question below, keep in mind that Maryland law defines a "smoke alarm" as "single or multiple station device ... including a built-in internal alarm [...
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1answer
44 views

Apartment Fire Code [closed]

Recently had a main transformer blow in my apartment building, whole place was without power, but we did discover that the fire alarms had no backup power source to allow the alarm pulls to still ...
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1answer
32 views

Where should I put the Google Nest smoke alarm in this room?

I have a large open plan kitchen dining and living area with a high vaulted ceiling. The ceiling meets two separate one-sided peaks in two places on the wall. I'd like to put a single Google Nest ...
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2answers
73 views

Is there a technical reason why there are seemingly no smoke detectors that are battery operated, dual sensor, and interconnected?

I've viewed dozens of "top X smoke detectors of 2020" sites, and scoured the leading brands' sites (Kidde, First Alert, and Nest), but I can't find any that are battery operated, dual sensor ...
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1answer
82 views

Hardwired Smoke Detectors, go with sealed battery units or unlocked with lithium 10 year batteries

Not sure if this is the right place to discuss and can't find an exact answer in the other discussions. My smoke detectors were manufactured in 2009 so its time to replace. They are hardwired and ...
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1answer
77 views

What should I do with the wires before I put a cap over the hole left by my (broken) electric smoke alarm?

We have a wired smoke alarm system. We've lived here 9 years and I have no idea if they work or not, so I installed battery-operated ones in pretty much every room. One day the wired one upstairs was ...
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1answer
32 views

How to connect fire (smoke or thermal difference), gas and CO alarms wirelessly?

There're detectors for smoke and thermal differences matching the characteristics of fire, carbon monoxide (CO) as well as natural gas. For some reason only some are combined (in the room where the ...
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1answer
56 views

Can Hardwired Smoke Alarms beep without power? [closed]

I have a hardwired smoke alarm that beeps even when I take the batteries out, unplug it from the outlet, and remove its cellularies. I was wondering if this is possible and if so, how long can they ...
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1answer
42 views

Is there a smoke alarm which can be hushed in DENSE smoke? [closed]

Every smoke alarm I've ever owned has a "hush" feature allowing you to push a button and stop a false alarm, for instance one caused by cooking. However, they all state a caveat in the owner'...
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2answers
110 views

Do Smoke Alarms have timers in them?

In my old residence, we had a smoke alarm that would always go off at 7 AM every Sunday. But whenever the power would go out it would go out at another random time, the first time was 3 PM every ...
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30 views

What type of wire to use for an overhead drop. For Fire Alarm system?

Type of wire needed? It seems to be a #14, 3 wire SO cord which was not the correct wire to use it has broken down in the sunlight. The insulation is brittle and it some places removed.
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1answer
83 views

How can I pick a smoke detector that only detects smoke and not heat?

Currently, my home's smoke detector is situated right outside our bathroom in the hall. Whenever someone takes a hot shower (usually me), the steam escaping the bathroom trips the detector, presumably ...
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1answer
454 views

Lights on same circuit don't work after replacing smoke detector

The big picture is that I replaced a smoke detector and now I can't get the light switches on the same circuit to work. I'm in an place that I recently moved to and don't have detailed electrical info ...
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1answer
160 views

Should the interconnect wire for smoke alarms read 120v?

Today I installed some new Kidde PI2010 Hardwired Dual Photoelectric and Ionization Sensor Smoke Alarm with Battery Backup smoke alarms. I am interconnecting 5 of them in my home. When I hooked up the ...
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1answer
3k views

What do I do with the ground wire in a smoke detector install?

The electrician ran 14/3 to a metal box. There is no grounding post on the Kiddie i12010s smoke detector. Can I just cap the ground and call it done? Doesn’t seem right but I’m not sure how to ...
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1answer
284 views

Smoke detector placement in long open concept space

I've just moved into a new house and it doesn't have a smoke alarm on the main floor yet. The main floor is a long rectangular open concept design, with living room at the front near the front door, ...
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1answer
73 views

Remove CO detector From wired alarm system

My house has a wired smoke alarm system, three smoke detectors and one CO detector. These are all old firex detectors, I am replacing them with three kiddie smoke alarms where one is combo CO + smoke ...
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1answer
19 views

Smoke detector position vs air register

Are there regulations about positioning a smoke detector in the vicinity of an air register? I would like to position it within 3 ft aerial distance but I'm concerned the air flow might be blowing ...
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0answers
68 views

Repurposing smoke detector power as fixture power

I removed a wired smoke detector and replaced it with a popular wifi-enabled battery-powered model. I'm left with a box that has: a black wire a white wire a red wire a ground I'm assuming the ...
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0answers
46 views

What could cause smoke detector false alarms in different rooms, a few days apart?

We purchased a 17-year-old home in Florida (USA) a few months ago, that has seven smoke detectors (one in each of its four bedrooms, two in hallways, and one in the main living space). A few days ago,...
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3answers
129 views

How can I lift the latch of the battery compartment in this smoke alarm detector?

First of all, I'm a bit embarrassed I cannot figure this out myself. I have looked up Youtube videos, Google searched but I didn't find any exact video. Plus I have tried pressing it hard, lifting ...
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2answers
39 views

Wiring smokes in series: one smoke beeps a lot

We wired three smokes. However, every so often (but always in the middle of the night) one of them starts beeping. I suspect that it is not actually being powered by electricity, but off the battery. ...
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2k views

Can a smoke alarm with cut wires cause a fire?

Can a smoke alarm with cut wires cause a fire? Not, that it might not detect a fire (I don't expect it to any more), but that the smoke detector itself may cause a fire. For my specific case, I cut ...
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1answer
303 views

How do i replace the battery in this smoke detector? It wont stop beeping

Its been beeping for ages and im sick of it, ive tried sliding as it says to but ive had no luck...
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4answers
2k views

Should lintels above wall portals be considered for smoke alarm placement?

I need to place a smoke alarm on my first floor (no sleeping areas). There is a wall portal with a 15" lintel (see image) between the living room and the dining room. I am unsure whether one alarm is ...
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4answers
555 views

Should my carbon monoxide detector be reporting zero PPM?

I've got a Carbon monoxide detector hanging in my kitchen for a few years now. Lately I've noticed it reads a PPM of 0 (zero). Is this right? Doesn't the air contains around 400 ppm? In other words, ...
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1answer
133 views

What is this electrical device?

At 3:30 am a couple days ago, the smoke detectors went off. Not the 'low battery' noise, but full alarm triggering the others to sound off as well. I checked around, and with no actual issue, pulled ...
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1answer
95 views

one-too-many smoke detector cavities?

There are two cavities in the wall. I want to replace the old smoke detector. Questions: (1) What's the big metal square thing on the right in the lower cavity, and did the lower cavity once house a ...
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1answer
13k views

What on earth is this small wall-mounted computer?

I live in a rented apartment, and there is this little plastic box on the wall that I had been ignoring. Here is what it looks like: There are no markings or holes on the casing. I got curious and ...
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2answers
883 views

Smoke detectors are on dedicated circuit, how can I add a light to that circuit?

The smoke detectors are currently wired to each other (2 wire) on a dedicated circuit. We want to add something that gets used often, so that we'll notice if the circuit has tripped. We would like ...
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2answers
881 views

Is this smoke detector safely connected?

I recently bought this house (built in 2000), so it went through inspection. I assumed everything was fine. I realized the smoke detector in one of the rooms was not showing the green light that the ...
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1answer
38 views

Smoke detectors (wired/wireless) - how much is enough

Our house is fairly new (2013 build year). We moved in 2016. On the second floor we have 3 wireless smoke detectors and 1 wired and on the first floor we have 1 wired smoke detector and 2 wireless. ...
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2answers
196 views

Do there exist smoke detectors with detached silencers?

I'm looking to replace a smoke detector for my kitchen, and I was wondering whether anyone had designed a smoke detector with a remote silence feature. The traditional method of keeping a stool or a ...
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3answers
89 views

Two identical fire alarms- different pitch

I recently purchased a twin pack of Kidde smoke detectors. One thing I noticed is that one sounds off at a slightly higher pitch than the other. A friend purchased two detectors of the same mode as ...
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0answers
67 views

Replacing an interconnected fire detector triggers the fire detectors in the rest of the house

I bought a Kidde KN-COSM-IBA to replace a 6 years old Firex i4618A detector that won't quit chirping even after battery replaced. Both the old and new detectors has the same wire quick connector that ...
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2answers
3k views

Nest Protect Expiration Date

I just bought a set of Nest Protects and after opening the first one I noticed that its manufacture date was almost a year ago and that the expiration date was 10 years from the manufacture date, not ...
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1answer
632 views

Counting Smoke Detector Wires In Junction Box

I want to connect a wire to get power for for a ceiling fan to an existing junction box in the attic that is used right now only for a smoke detector. Box currently has a 12-3 wire coming in, and the ...
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1answer
60 views

Trigger an alarm with wired smoke detector

I am looking for a solution that would make the wired smoke detector in the apartment downstairs trigger an alarm. The purpose is to be alerted if there is smoke while the tenant is away/in the shower....
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1answer
76 views

Combine Lights on one switch and remove smoke detector from switch

Experts, I've got a weird wiring situation in my kitchen (just bought the house). "A" (a dimmer) in the picture controls both a light (let's call it light "X") and (wait for it) the smoke detector! ...
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1answer
127 views

Smoke detector at highest point of pitched ceiling - good or bad?

I have several smoke detectors in my house - all of which I can reach with a ladder - except one. It is at the highest point of the pitched ceiling in the entry way of my house. A person that is 6'5"...
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1answer
97 views

Over-enthusiastic smoke detector

The hard-wired smoke detectors in my house all were well beyond their rated expiration. So I replaced them all. I now need to keep a broom handy whenever I use my oven or broiler -- the smoke detector ...
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1answer
113 views

Testing a wired smoke detector system, with in-ceiling fire suppression - how to test detectors

...without setting off the sprinklers? I'm not sure wired detectors (on 3 floors of a condo) are connected to the in-ceiling fire sprinklers, so... How do I determine the detectors are all working/...
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2answers
207 views

How to interconnect Kidde smoke/co combo detectors Mod# KN-cope_IC with Edwards Heat detectors Mod# CR-135-2 using relay SM120X

How do you wire the above units so the smoke/co detectors will all ring when heat detectors are activated. The heat detectors are a two wire hook-up. Existing wiring to heat detectors is existing and ...
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1answer
1k views

Wired fire/smoke alarms not communicating with each other

After replacing the wired fire alarms in my house with new ones, when testing any of them, that one beeps but not the others. Model is BRK First Alert 9120B6CP. Each alarm came with three cables. ...
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2answers
533 views

install smoke/fire detector in basement

I would like to install smoke detector in the basement, which has the following layout: +----------------------------------------+ | | Small ...
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4answers
6k views

Are rechargeable 9-volt batteries suitable for use in smoke detectors?

Lithium-Ion rechargeable 9V batteries are now readily available. Are they appropriate for use with hardwired smoke detectors, which typically use 9V batteries as battery backups? What about for use ...
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5answers
13k views

CO detector starts beeping every morning at 6am

My 2-years old CO detector (small, wall-mounted device with battery, no other power source) started beeping every morning for at least few minutes, sending sharp chirps once every 10 sec. It starts ...
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1answer
1k views

How can I open this smoke detector to change the battery?

I don't know the model of this smoke detector, but it's beeping from low battery and needs to be changed. I can't figure out how to open it, so hoping someone can help! Here are some photos of it: If ...