Best Home Carbon Monoxide Detector

First Alert Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location, SCO500B-3

Smoke detector carbon monoxide detector combo - sounds loud 85 decibel alarm with voice alerts that announce "Fire! Fire!" or "Warning! Carbon Monoxide!".
Hardwired with backup battery - combo smoke and carbon monoxide detector is hardwired into a 120V power source with 9V battery backup.
Easy installation - battery door is on the front for quick replacement.
Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings.
Will interconnect with up to 24 other devices including smoke, CO and heat alarms.
Package contains six smoke and carbon monoxide detector combo units.

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas.

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas.

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help....

High Sensitivity and Fast Responsive—Carbon Monoxide Detector features an advanced electrochemical Sensor that accurately detects carbon monoxide levels and quickly response to save your life in the first time when fire hazard occurs,To ensure complete protection make sure to place one on each level of your home and in each bedroom..
Safe And Visible LCD Digital Display—With 3 digits LCD displayer is optional, 'Err' on the LCD to indicate the unit is malfunctioning. 'Lb' on the LCS to indicate it low battery and need to replacement. '999ppm' on the LCD to indicate CO level over 999ppm And Loud 85 decibel alarm with LED Flash While in the Alarm Mode for the life-saving safety, protect the family from carbon monoxide..
Alarm Standard & Alarm Warning—When the alarm detects that CO concentration exceeds 50ppm , alarm within 60-90 minutes.
300ppm, alarm within 3 minutes. When a dangerous level of carbon monoxide is detected the red LED will flashes and a loud alarm pattern will sound--Loud 85 decibel alarm with LED Flash..
Easy TO Install & Widely Use—Simple to use,with a single test/reset button,Comes with mounting accessories, just drill holes in the right places , and done.

Digital display shows the level of carbon monoxide the CO alarm is sensing, updated every 15 seconds.
Still works during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure.
Plug-in carbon monoxide detector can be installed in any outlet of your home.
use the attached extension cord to place on a table or shelf.
When CO detection is normal, a red dot appears in the lower right corner & blinks.
includes a test button that also resets the CO detector.
Includes 2 Kidde Nighthawk Carbon Monoxide Detectors.

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help....

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas.

CO detector alerts with a loud 85dB warning signal indicating dangerous levels of carbon monoxide in your home.
Plug-in that still works during a power failure - 2-AA batteries (included) provide backup for your CO alarm in the event of a power outage.
Easy & quick installation - plugs into any standard AC wall outlet.
Purchase multiple alarms for whole-home detection - place 1 carbon monoxide detector on each level of your home & outside each sleeping area to help protect against poisonous CO gas.