Ionization smoke alarms are more sensitive at sensing small particles, which tend to be produced in greater amounts by hot, flaming fires, that are consuming combustible materials rapidly and may spread quickly.
Photoelectric smoke alarms are generally more sensitive at sensing large smoke particles, which tend to be produced in greater amounts by smoldering fires, which may smolder for hours before bursting into flame.
For maximum protection and full coverage from all types of fires, your best option is to use an smoke alarm that features both photoelectric and ionization sensing technologies.
Average Customer Rating Based on 18 reviews:
First alert fire alarm - 01/01/2018
Reviewer: Danilo Cable
Good product, easy to install. Look nice design.
Reviewer: Erika Cordero
I needed a replacement for a discontinued Tek electronics model IL_930 Ionization smoke detector and this was perfect. Followed the directions and was easy to install plus it looks good. One very satisfied customer!
Easy install. Works great. - 07/31/2017
Reviewer: Richard Hunter
Replaced builder grade of competitive brand that was 10+ years old. Good to now have both smoke sensing technologies. Detector comes with batteries, mounting plates, paint cover and wiring pigtail. Remove old detector, wire new pigtail and base plate and plug it in.
Reviewer: Asa Crane
I am replacing cheap and the installation was simple to carry over. No false alarms, which was problem with cheap.
Smoke Detector - 01/26/2017
Reviewer: Paul Silverman
Easy to install and looks good. Works well with first alert co/smoke detectors already in the house.
dual sensing - 10/21/2016
Reviewer: Daniel Zerby
After seeing some research about smoke detectors. Our business highly recommends dual sensing units over the low price Ionization to help my family and our customers feel safer.
BRK Hardwired Smoke Alarm - 09/14/2016
Reviewer: Nicholas Steiner
Excellent replacement for my Mother's Ten-Tek Electronics Model IL-930, Ionization Smoke Detector. Apparently Ten-Tek is out-of-business. Now I have a hardwired Smoke Detector which will detect both Photoelectric and Ionization fires.
Very Happy - 05/31/2016
Reviewer: Mary Nelson
We needed to replace our 3 smoke alarms so I contacted you. They came pretty fast & out daughter's boyfriend put them up. Only problem one of the alarms needed different batteries, so I suppose the other 2 will follow. Thank you.
Reviewer: Len Gregg
Good item where fire and smoldering is a risk. I placed this one in an area of my stair well. This item seems to have a longer delay when testing with the interconnect hardwired. Would have liked it to have co. as well.
120VAC Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup - 09/30/2015
Reviewer: Thomas Woosnam
I have now received 3 of these smoke detectors and I am very pleased with the site and my ability to find stuff. I am also pleased with the shipping process: information and speed. One of my three is in use and works well. I will install the other two in the next several days. The install of # 1 was easy. I feel safe with these products. I recommend you use 1st Alert store and this smoke detection product. Tom W.
Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.