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Here is a response on a forum:
"Hello ####,
I do apologize for taking so long to get back with you. Thank you for contacting First Alert support. I will be happy to assist you with your detector question. First Alert is aware of the need for hardwired Zcombo alarms, and I know we are working on that technology. We were due to come out with new technology in May 2020, but that has been postponed until June 21st 2021. If we do come out with this technology, it will be highlighted on our website at that time. We do listen to our customers, and we are always improving.
If you have any further questions or concerns, please respond to this email, or call the number below.
Have a Good Day!
Regards,
Mary
First Alert Customer Service"
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Lowest * $25.41 Oct 16, 2014
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Here is a response on a forum:
"Hello ####,
I do apologize for taking so long to get back with you. Thank you for contacting First Alert support. I will be happy to assist you with your detector question. First Alert is aware of the need for hardwired Zcombo alarms, and I know we are working on that technology. We were due to come out with new technology in May 2020, but that has been postponed until June 21st 2021. If we do come out with this technology, it will be highlighted on our website at that time. We do listen to our customers, and we are always improving.
If you have any further questions or concerns, please respond to this email, or call the number below.
Have a Good Day!
Regards,
Mary
First Alert Customer Service"
I installed it in the hall near the only possible source of CO in our house: the furnace. I installed compatible smoke only detectors (BRK9120 - https://smile.amazon.co
Because they're hardwired, if one goes off, they all go off, no matter what the reason is.
I installed it in the hall near the only possible source of CO in our house: the furnace. I installed compatible smoke only detectors (BRK9120 - https://smile.amazon.co
Because they're hardwired, if one goes off, they all go off, no matter what the reason is.
The 9120B is not a newer model, it's a different type of smoke detector. Ionization vs Photoelectric.
That said, you've got me thinking maybe I should have this one in the hall if the detectors in the bedrooms are ionizing.
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Ionization is supposed to be good except for kitchen I believe. Reccomendtion I read said both should be installed in a house.
I have the talking version of these with wireless connected between 3 alarms. I have one of the OP models as well, not connected to the talking units. These come with duracell batteries and they do not seem to false alarm. The AA batteries make these much more economical when replacing batteries regularly.