Customer Reviews
Saved My Family's Lives!!! 
2008-06-27
We had the model before this one, and shortly after getting it as a gift, it went off.. we were groggy and we barley got out. When the fire department got there it was clear, it saved our lives!! GET ONE!! GET TWO!! (One Battery, One electric!!) Have fire alarms in EVERY ROOM.. But what worried me, is would any alarm actually wake up the kids!! (test yours deep in the night at least once, to see if it will.. This one is loud & clear!) Still, put one closer to hear it better in your sleep!! (Remember they have to be up at a certain height, so read the instructions!!) Have a plan with an uncluttered exit. Carbon Monixide is colorless and odorless, but you are just as disoriented with high levels as waking up in smoke. Protect yourself & your home.. Have extinguishers, and alarms, and keep your phone & keys shoes & coats where you can grab them in an emergency..
I'm writing this because I have to find out why our old model is suddenly reading 7 .. We got in in late 1995, and it is time for a newer model. I will be watching the levels tonight. This is a reminder that the furnace is overdue for a cleaning as well as the chimney! If you have a wood stove, or oil furnace, You NEED one of these!! It once went off when a generator running a water pump was too close to the basement door and the fumes came upstairs, 2 hours later!! Thanks for reading.
Lasted 9 years - great product 2007-12-20
This unit has worked for 9 years flawlessly. That's an excellent life for these devices - they probably should be replaced more often, but this one has tested fine and served continuously without problems. I'm happy to be investing in the newer unit (the Kidde 900-0076). This one finally announced it's need to be replaced by giving the malfunction error indication - as it should.
MUCH CHEAPER elsewhere 
2006-01-07
Unusual for Amazon...but much cheaper at HomeDept-&39.97 and at Walmart-$44
This is MUCH Cheaper at Home Depot 
2005-12-19
This exact alarm is at Home Depot for $39!
Lifesaver! 2004-02-01
We've had our detector four years, always showed the low reading of zero. Then, in the middle of the night one night it awoke my wife and I to display very high readings of carbon monoxide. We called the fire department which investigated to discover a problem with our furnace. They said if we didn't have it we might have died.
This detector saved our lives! 2002-09-04
Kidde 900-0056 NightHawk carbon monoxide alarm with digital readout / Continuous readout of measured CO values / Loud 85 decibel alarm / AC direct plug in AC direct plug in 5-year Manufacturer's Warranty
Works perfectly 2000-05-20
I work at a truck shop where noxious fumes can sometimes make you sick. In the office we have this detector and it gives you that extra security in case the carbon monoxide level gets to high. It has gone off a couple of times, and you wouldn't even of known there was a problem otherwise. Basically this product works great, and I just wanted to let everyone know about it.
