First Alert CO400 Battery Powered Carbon Monoxide Alarm
by First Alert
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Product Details
Manufacturer: First AlertModel: CO400
Product features:
- Battery-operated carbon monoxide alarm
- Uses electrochemical carbon monoxide sensor--the most accurate technology available
- Simple to use silence/test button, low battery warning, end-of-life timer
- 2 AA batteries included
- 5 year limited warranty
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Tools and Hardware Reviews of First Alert CO400 Battery Powered Carbon Monoxide Alarm
Customer Review: USELESS - 400 PPM IS WAY TOO HIGH SPEC
Summary: 1 Stars
This alarm turns out to be rated to go off only at a super-high concentration of 400 ppm (that's what is says on the sticker on the alarm).
That's when you might as well die or get long-term neural damage.
I suffered chest pains and dizziness for a whole d--- year from a gas wall heater, and the alarm never went off.
50 ppm is maximum OSHA limit in the workplace for breathing for 8 hours.
Here are the concentrations for various health dangers:
Concentration Symptoms
35 ppm (0.0035%) Headache and dizziness within six to eight hours of constant exposure
100 ppm (0.01%) Slight headache in two to three hours
200 ppm (0.02%) Slight headache within two to three hours; loss of judgment
400 ppm (0.04%) Frontal headache within one to two hours
So, I was living with chest pain and dizziness on a daily basis in my apartment. This alarm is useless to alert you to the danger of chronic low concentrations that are debilitating. Isn't it odd that the FirstAlert website and this Amazon listing provide ZERO information about what concentration level the alarm is supposed to detect? This provides a FALSE sense of protection!
Description of First Alert CO400 Battery Powered Carbon Monoxide Alarm
Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air.The First Alert CO400 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The permanent sensor lasts up to five years. It is powered by two AA replaceable alkaline batteries giving you peace of mind even during power outages. The test/silence button both silences the alarm and allows you to test its functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual low battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 year limited warranty. UL listed. --Bree Norlander
What's in the Box
One carbon monoxide alarm, user's manual, and two AA batteries
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