Problem of carbon dating

To avoid purchasing very old stock, I bought the third unit directly from First Alert, and I received a product only one year old. Easy to test, easy to see, easy to install, easy to comply with the new law.I wish there were some safe way of testing a carbon monoxide alarm, aside from pushing the test button - something equivalent to lighting a candle under a smoke detector. I love the light up display that tracks CO levels in the home. I love the backup battery - NEVER HAVE TO REPLACE EXPENSIVE BATTERIES AGAIN.... This monitor is a winner and I highly recommend it!Top Rated CO Unit - 04/15/2015 Reviewer: Regis Ruppert Great! Just put in the battery back up, plug it in, and it's good to go. Replacement - 03/30/2015 Reviewer: Michael Matovich The FAS-170543 CM Alarm with Battery Backup & Backlit Digital Display replaces a much older CM Alarm by another manufacturer.The new CM Alarm is more responsive and gives my family added security.I recently attended a New York City Fire Department presentation, which advised that CO detectors should be replaced no later than 7 years after their date of manufacture.Unfortunately, the manufacture date cannot be viewed without opening the package, so no one can tell how fresh the unit is. If so, it should be visible on the outside of the package, and online sites should advertise the date.And the batteries are two AAs, so they are not expensive. In two years, there is no noticeable drop in battery voltage.

Remote mute silences nuisance alarms by pressing any button on a standard household remote control (remote not included). Carbon monoxide detector utilizes electrochemical sensor for increased accuracy. NOTE: If you mount the Alarm high on a wall, make sure it is at least 4 inches (102 mm) down from the ceiling. So that told me that it had seen its useful LIFE TIME. Very useful safety device - 09/25/2017 Reviewer: Vic Monzon I wanted a device that would give me a level of threat for CO detection. I give it a TEN :- Totally electrric - 02/11/2017 Reviewer: Scott Waterman After placing the order, within days the requested alarm was at our home and within minutes up and operating.carbon monoxide alarm with battery - 11/19/2013 Reviewer: walter skora was concerned there were no range of carbon monoxide levels to know when the levels are lethal. Good alarm - 11/03/2013 Reviewer: Anonymous I like the digital display, batteries are easy to insert and battery door is easy to access, it is located on the front of the unit instead of the back.I hope this unit never has to go into alarm but I am able to rest easy knowing it will if necessary Easy peasy. Fortunately, there hasnt been any cause for the alarm to alert, but this is a nice unit.The new ones use 2 AA batteries in place of the 9 V one, These are smaller, slimmer and look better!Plug-in Detector - 12/28/2015 Reviewer: Jack Skoglund I am very pleased with the alarms I purchased. Makes me feel safer knowing they are monitoring the carbon monoxide levels in the house.The only CO measurement it has is the 24 hour peak level.I really dont know how to rate this, as it has yet to ever indicate any CO and I installed it in my propane fireplace room.I installed the batteries and plugged it into a wall socket only four feet from the furnace and water heater.I have had no false alarms Strange functrionality - 01/09/2014 Reviewer: Mike Di Mascio I find it strange that it does not give a reading of the current CO level at all.First Alert's Plug-In Carbon Monoxide Alarm with Battery Backup offers several unique installation options.This alarm easily plugs into any standard outlet with no additional mounting necessary or it can also be mounted on any wall using the convenient power line cord(approx. Battery backup ensures alarm works even during power outages.

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