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What are the different types of smoke alarm sensors

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There are 4 different types: optical, ionization, fixed temperature heat alarm, and multisensor alarms.

Posted on Jan 16, 2013

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My detector start to beep once a while, seem to react to the fat the electric plate is starting.


It's possible that your smoke alarm is mounted too close to the kitchen, which can cause false alarms. Most household smoke alarms are the ionization type, which respond to the presence of gases in the air which are caused by combustion, as opposed to visible smoke, but kitchens are better protected using heat sensors to prevent false alarms. Many companies now make heat sensors that can tie into the existing smoke alarm system...check with the manufacturer, an electrician, or your local hardware store.

Jan 12, 2016 | Home

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How do I troubleshoot an intermittent problem with a 2 wire system sensor smoke detector


Intermittent problems are often difficult even for professionals. That said, I would need more specifics on the problem if you want to continue on your own first. The model of the system, keypad indications, whether the problem is a trouble or alarm, what make/model the detectors are (there could be more than 1 type on a 2-wire fire zone), etc.

Oct 14, 2014 | Home

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I have the Firex i4618, after changing the battery it continues to chirp, have tried 2 new Duracell proper model batteries with same result.


Smoke Detecotrs have a limited lifespan of 5-7 years. So sounds like you need new one (Its not worth to buy just a sensor). Take a look on amazon Amazon: Amazon com Smoke Alarm. I hope this helped you. Have a nice day

Jan 06, 2013 | Kidde Firex I4618 Smoke Alarm W/battery...

1 Answer

The sensor Honeywell TC807A 1036 (Smoke Detector), is compatible with a NFS-320 Fire Alarm Control Panel?


I don't know if that particular smoke is compatible or not, but the NFS-320 is a commercial rated UL864 Revision 9 fire panel, which means the documentation is part of the UL listing. This means that in order for a device to be compatible with the system, it must be listed in the Installation Instructions as compatible. I couldn't find any mention of that particular smoke in any of the documentation I found for that alarm panel.

Oct 23, 2012 | Honeywell Tc807a1036 Smoke Fire Detector...

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Goes off only at night with NO warning cleaned & changed batt. 4 times so far !!!!


These types of smoke detectors are PHOTOELECTRIC, the way it works, there is a IR transmitter and a IR receiver placed in a dark chamber aligned at a 45degree angle, when smoke enters the chamber IR light bounces of the smoke and than generating an alarm, so in conclusion if there is a lot of DUST in the chamber it reflects the IR light just like smoke, than can generate an alarm, try blowing air in the smoke detector (gentely) if it does not work replace the smoke detector...

Feb 04, 2011 | System Sensor 2100rfadt Wireless Smoke...

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Kidde pe 120 photoelectric sensor smoke alarm emits 3 "beeps" with a pause and then repeats until the 9vdc battery is removed. The house is not on fire and the 120vac power is connected. What might be the...


The 3 beeps, known as temporal pulse, is indicative of an alarm condition. If it stops without a battery, then the unit either does not have power or is otherwise defective.

Jun 03, 2010 | Kidde PE120 Hardwire with Battery Backup...

2 Answers

My smoke alarms which are also hardwired into the electrical system, are going off for no reason every 5 minutes


Your smoke alarms may be hard-wired and also have a battery backup. If this is the case, the batteries may need to be changed. If there is no battery issue, then it may be that the alarms have aged out and simply need to be replaced. Regards, Joe

Dec 20, 2009 | Sentry Fire Smoke Alarm

2 Answers

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its depend on the alarm there are many types of alarms

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