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S Oct 15, 2018 at 22:35 comment added Wellcraft ... dependably reliable, albeit at an elevated cost. It uses a "split-spectrum" sensor that uses a traditional infrared photo-electric sensor and a blue LED sensor, which one might refer to as a "hybrid" that provides the smoke sensing features of both photo-electric and ionization coupled with CO detection. The Nest Protect is also Wi-Fi capable, although there are still router compatibility issues.
S Oct 15, 2018 at 22:35 comment added Wellcraft "Most hard wired smoke detectors made within the past 5 years also detect Carbon Monoxide" - That is an INCORRECT statement. There are ionization type smoke detector/alarms, photoelectric type detector/alarms, and combination type detector/alarms that combine either ionization or photoelectric smoke sensing technology along with CO (Carbon Monoxide) detecting technology. And there are combination smoke detector/alarms that combine ionization and photoelectric smoke sensing technologies. Currently the only known detector that combines all three aspects is the Nest Protect and is rumoured to be
Jul 5, 2013 at 19:40 comment added ucsky Even if the landlord said me that it was doing CO alarm it is not written on it so I guess it's not detecting CO. I have a bunch of other device for detecting CO and so far it's didn't measure anything.
Jul 5, 2013 at 19:35 history answered zeke CC BY-SA 3.0