Questions tagged [smoke-detectors]

Device for detecting smoke and/or fire.

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2k views

Is it typical that smoke detectors in adjacent apartments be linked?

I rent the downstairs apt of what used to be a garage. There is one other unit located on the second floor. My smoke alarm was going off frequently without my knowing why. Landlord finally told me ...
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1answer
2k views

Turning light on turns power to fire alarm off

I have a ceiling fan connected to a two way switch. When I turn the ceiling fan/light on, the power to the hard wired smoke detector is cut off, whereas turning the fan/light off returns power to the ...
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1answer
215 views

Why would I have two wires feeding one smoke detector?

I found a smoke detector in my house that appears to have two wires feeding it from two different circuits. Is this OK?
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161 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
102 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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2answers
1k views

Red wire in ceiling box: traveler or smoke alarm interconnect?

I have an electrical box in the ceiling, currently with all the wires capped and a blank faceplate over it. Two cables coming in, both with four conductors (black, white, red, and bare). I don't know ...
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522 views

Smoke alarms start beeping after switching on the mains

I have two smoke alarms in my flat. Recently I had to change the battery for one of them, so I switched off the mains, disconnected the alarm, replaced the battery, tested it, and reconnected the ...
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3answers
80 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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3answers
305 views

Can I mount a smoke alarm using magnets?

I am installing smoke alarms in my 1930s house. I'd rather not drill into the plaster at this time, but I want to get them mounted. I have drywall beads along the top of all my walls, so I was ...
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1answer
53 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
53 views

Does home security system only link to wire-powered smoke detector but not the battery-powered ones?

Currently my home has battery-powered smoke/CO detectors, I wonder if in the future I am setting up a home monitoring security system with commercial company for the whole house (to detect things like ...
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21k views

High pitched beep in house every 15 minutes [duplicate]

Can anyone help? I keep hearing a 3 second high pitched beep but can't quite tell where it is coming from n our lounge where our home theatre system is, i.e. LED TV, receiver, speakers, blu ray player,...
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1answer
118 views

Is it possible to use a single wire smoke alarm with an alarm system?

I'm in the process of installing an alarm system that supports 2 or 4 wire low voltage fire alarms. The house is wired with high voltage single wire smoke alarms. As I understand it, there are ...
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1k views

Old house--no neutral wire for Nest Protect?

I'm not particularly electrically inclined, but am giving a go to setting up a wired Nest Protect where an old smoke detector was installed. The device says to connect its white wire to the white (or ...
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2answers
64 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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1answer
40 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
101 views

How can we disable an unused smoke detector?

We have wired ADT smoke detectors now. Our old free standing detector is chirping. How can we disable it without taking it off the wall?
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1answer
129 views

How can I verify the integrity of smoke detector interconnect wires?

I inherited an existing installation of four smoke/CO detectors. They are all First Alert 3-wire AC-powered units. The test button on each detector produces some weird behaviors: Some detectors only ...
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2answers
487 views

Using FPL (18/4 ) cable for 120v Smoke detectors

Currently have 18 smoke detectors inter-connected to a Vista 20 panel with 18/4 FPL cable. We are selling (sold) the house, but have to replace all detectors since they are more than 10 years (...
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2answers
154 views

Efficient way to test smoke detectors

I just got done wiring boxes for my hardwired smoke detector system and am about to start installing detectors. When testing in the end, I heard they sell some test aerosol spray which is the ...
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1answer
255 views

How can I safely test my (optical) smoke alarm?

My landlord has recently reinstalled my smoke alarm. It is labelled on the smoke alarm as an "Optical" type. The smoke alarm appears to be working - it's powered by both mains electricity and battery ...
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1answer
55 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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2answers
1k views

Can a smoke detector circuit be GFCI and CAFCI protected?

I purchased a dual GFCI/CAFCI circuit breaker to place on my circuit that contains only smoke, CO, and heat detectors inside my house. Is there anything wrong with this or can I install it to have ...
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2answers
1k views

Help installing Nest Smoke/Co alarm to capped ceiling light wires

I am trying to install a Nest Protect (co/smoke alarm) and need to connect a black wire to the power line (which is the the one with the red cap after I used a voltage detector) and the white wire to ...
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2answers
76 views

Is Black & Decker's “Codes for Homeowners” (3rd edition, 2015) a useful resource? [closed]

Is the Black & Decker "Codes for Homeowners" worth buying as a home improvement reference work?
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1answer
229 views

Finding and installing a carbon monoxide/natural gas detector

I am looking at installing a carbon monoxide and natural gas detector on the ceiling of my house. I cannot find one device that combines both types of detection and that is supposed to be mounted in ...
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1answer
2k views

Can I upgrade my hardwired smoke detector in apartment without triggering central alarm? [closed]

I'm living in an apartment building and would like to upgrade one of two detectors in my apartment from an older hardwired detector to the new Nest Protect. I purchased the battery-operated version ...
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0answers
59 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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1answer
42 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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119 views

Smoke detector giving false alerts

At home, we have two smoke detectors: one on the ground floor and one on the first floor. The problem is that the one at the first floor gives a lot of false alerts (and the one at the ground floor ...
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6answers
22k views

How do I disable smoke alarms?

I'm going to have a party and I had experiences previously with a smoke machine triggering smoke alarms, so I want to disable them temporarily during the party. How do you do that? This is what the ...