Last Updated: January 7, 2020 (Refresh Now)
Kidde Nighthawk Plug In AC DC Carbon Monoxide Alarm Detector with Digital Display KN COPP 3
Last Updated: January 7, 2020 (Refresh Now)
9.0
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/10
Total Reviews
998
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0
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Review Analysis - 978 recent, verified reviews
Detailed Mode
Product Reliability
161lasted, 10 years, date, replace, replaced
+80%
-20%
" ... Both of the ones I had before lasted their expected seven years without problems, so I expect the same from this one. ... "
" ... Worked appropriately, no issues. ... "
" ... I bought this one to replace one that died right on schedule after 8 years. ... "
" ... Purchased this product to replace a similar product that reached end of product life. ... "
" ... Working great and no issues. ... "
" ... The old one worked fantastic for about 10 years. ... "
" ... I replaced one I had for 10 years and replaced it with this one. ... "
" ... Bought to replace a 10 year old unit. ... "
Ease of Use
127easy to use, easy, easy to set, read, works great
+100%
" ... Easy to setup and use. ... "
" ... Easy to use. ... "
" ... Not expensive and easy to use. ... "
" ... Easy to install. ... "
" ... Easy to install and does the job ... "
" ... Easy to install ... "
" ... Easy to install! ... "
" ... easy to install , good price . ... "
Setup
110easy, installation, install, plug, instructions
+100%
" ... The long cord makes installation easy ... "
" ... Love the ease of plugging this in - no wires, no installation! ... "
" ... easy to install , good price . ... "
" ... Easy to setup. ... "
" ... Fireman suggested I get this when I had gas logs installed. ... "
" ... This was easy to install and seems to work okay. ... "
" ... Easy to install ... "
" ... East install just have to plug in to an outlet ... "
Battery Life
92backup, plugged, batteries, beeping, plug
+62%
-38%
" ... I was surprised that an alkaline battery was included. ... "
" ... love the batter baCKUP feature it has ... "
" ... Like the battery backup and fact it can be located away from plug in. ... "
" ... I installed the battery as directed which came with the device, understood the the LED readings to be expected and familiarized myself with the unit. ... Having an AC operated unit with battery back up is great. ... "
" ... Comes with build in A/C adaptor and 9 volt battery as backup. ... "
" ... I like that you can either use them plugged in or on battery ... "
" ... Always accurate and reliable with battery backup. ... "
" ... this is newer model of old one, so hope it lasts as long. ... "
Capacity
55floor, bedrooms, apartment, co, carbon monoxide
+100%
" ... Happy to know we have a other level of protection in our house ... "
" ... Both installed in opposite ends of condo ... "
" ... Excellent product, keeps my house safe ... "
" ... Bought one for each floor of my house, and all seem to work well. ... "
" ... i just updated 2 of them since the firemen who did a routine house check said they last 7 years or so. ... I have one on each floor and especially near the bedrooms at the top floor. ... "
" ... I am pretty sure most homes have bedroom plugs located near the baseboards unless you live in a brand new home. ... "
" ... Very flexible as it can be plugged into a wall outlet directly (I have mine in the hall outside bedrooms) or can be used with the included cord and wall mounted or even free standing. ... "
" ... Had one of these before in my cottage up North. ... "
Price
44product, worth, money, value, cost
+100%
" ... Price has come down. ... "
" ... High quality and good price. ... "
" ... Quality and performance though somewhat expensive is a small price to pay for your peace of mind and possibly your life or that of your family and pets. ... "
" ... Can't beat the price. ... "
" ... Good price, and appears to work well. ... "
" ... This is the same product most companies install for a lot more money. ... "
" ... Couldn't find one is any of the local box stores at this price. ... "
" ... Great product from a great company at a great price! ... "
Clock
43alarms, co, carbon monoxide alarm, loud, false
+74%
-26%
" ... Working fine with no false alarms. ... "
" ... Easy installation process, loud alarm. ... "
" ... So when my old alarm finally told me it was at the end of its working life I naturally replaced it with the same model. ... "
" ... Super annoying alarm sound so it WORKS. ... "
" ... Alarm sounds during setup. ... "
" ... When the combined smoke/CO alarm went off in my sons apartment he and his friends assumed it had just gone bad because there was no smoke. ... "
" ... Had this model, it sounded the alarm. ... "
" ... SO FAR I HAVE NOT HAD A GAS LEAK ,THEREFORE NO ALARM BUT I HAVE FAITH THAT IF AND WHEN I HAVE A GAS LEAK THAT THE ALARM WILL GO OFF AND EVERYONE WILL ESCAPE SAFELY. ... "
Marketplace
36works, described, advertised, thank, day
+89%
-11%
" ... thank for getting this item to me so fast ... "
" ... The price on Amazon is much less than the big box stores. ... "
" ... Replacement just like original, hope I do not need to use it. ... "
" ... Works "as advertised". ... "
" ... works great as advertised ... "
" ... Bought a new model from Amazon which arrived in one day! ... "
" ... Thank you A +++++ ... "
" ... Thank You Very Much ... "
Display Clarity
35digital, read, easy to read, easy, reading
+100%
" ... Nice to have the digital readout. ... "
" ... I love the display. ... "
" ... I really like this one because it has a digital read out display, ... "
" ... Monitor is easy to read with great features! ... "
" ... I like that it was easy to use, the included pamphlet explained the display in nice detail. ... "
" ... Carbon Monoxide Alarm with Digital Display." ... "
" ... And the display is easy to read. ... "
" ... While sitting one day I notice the display was reading 5, but no alarm. ... "
Returns
34replaced, late to return, replacement, expired, returning
+47%
-53%
" ... i think we got a dud but it’s too late to return to amazon and now have no recourse than buy another 😞 ... "
" ... Will be returning and gojng to Lowe’s 😡 ... "
" ... I can't even use it and it's too late to return. ... "
" ... i think we got a dud but it’s too late to return to amazon and now have no recourse than buy another 😞 ... "
" ... There's not a link to return or exchange this defective item. ... "
" ... Unfortunately, I'm past the 30 day return so am stuck with a lemon! ... I was out of town for two weeks and now it's too late to return for a refund. ... "
" ... I could not get it to work properly so I had to return it ... "
" ... Procrastinated and finally decided to return the item, but now return window is closed. ... "
Ports
28outlet, plugged, wall, directly, plugs
+93%
-7%
" ... Just plug it in. ... "
" ... I love how you can disconnect the plug from the actual monitor and it has a long cord so you don’t need to have the monitor directly at your outlet. ... "
" ... Plug it in and you're done. ... "
" ... The other model that I returned you had to have hardwired to the house so I prefer the plug-in model I’m very happy with it. ... "
" ... Plug in to wall, various ways to plug in. ... "
" ... Plug it in and it works. ... "
" ... The wall plug was close enough for me to place the unit about 3’ above the floor and close to the hall doorway. ... "
" ... Plugged right in and seems to be working fine. ... "
Delivery
23delivery, day, delivered, date, recieved
+78%
-22%
" ... Received very quickly. ... "
" ... Great product, awesome price, fast delivery! ... "
" ... Bought a new model from Amazon which arrived in one day! ... "
" ... Fast shipping/delivery. ... "
" ... Delivered on date promised. ... "
" ... Item arrived as listed and is working just fine. ... "
" ... Great product, awesome price, fast delivery! ... "
" ... Bought a new model from Amazon which arrived in one day! ... "
Build Quality
17broke, battery, wall, protection, plugs
+71%
-29%
" ... This model plugs into the wall and rests right on the nightstand. ... "
" ... It's our second Nighthawk carbon monoxide detector and our first one still works after 21 years, so we put it downstairs for added protection. ... "
" ... Feel safe with this product ... "
" ... Solid product, plugs into ac so no batteries to replace, looks good ... "
" ... Nice knowing we're protected. ... "
" ... We like this CO detector for protection. ... "
" ... Feel safe with this product ... "
" ... you are done and fully protected. ... "
Charging
15plug, outlet, wall, backup, plugged
+87%
-13%
" ... Like the battery backup and fact it can be located away from plug in. ... "
" ... Whether it be one that is battery operated, or one that needs to be plugged into the wall - do it. ... "
" ... I really like the pull out stand for charging my cell phone and tablet. ... "
" ... Installation was as easy as plugging it in to a wall outlet after installing the included 9 volt battery. ... "
" ... This is a great little unit that either plugs into the wall or uses battery power. ... "
" ... Not too expensive, just put batteries in, plug into wall, done, ... "
" ... No false alarms to-date and it is easy enough to install - just plug it into an outlet. ... "
" ... Install a 9-Volt battery, plug the unit into the wall, and away you go! ... "
Product As Described
14described, advertised, product, works as advertised, expected
+100%
" ... Just as described . ... "
" ... Exactly what was described. ... "
" ... Does everything as advertised ... "
" ... Exactly as described ... "
" ... works great as advertised ... "
" ... Product as described! ... "
" ... Works as advertised ... "
" ... Product as described! ... "
Fit
14stay, outlet, would, way, tape
+64%
-36%
" ... Very decorative design that fits in with any style, but most of all . ... "
" ... easy to set up BUT battery cover falls off easily. ... We had to tape it closed. ... "
" ... These were a great fit . ... "
" ... They stayed with the attaching part. ... "
" ... Best way to stay safe. ... "
" ... I plan on heading out to the parking lot soon to honk the horn on my car so I can feel secure that my automobile is in perfect working order. ... "
" ... Best way to stay safe. ... "
" ... This model plugs into the wall and rests right on the nightstand. ... "
Comfort
13safer, head, comfortable, secure, replacement
+85%
-15%
" ... When it finally wore out, I did an exact replacement. ... "
" ... Have natural gas ad feel real comfortable with these alarms. ... "
" ... I replaced them all and I feel confident using these. ... "
" ... It actually shows you a digital read and generally feels safer. ... "
" ... I feel much safer ... "
" ... WHAT A RELIEF . ... "
" ... seems to work well, I feel safer ... "
" ... I know, it's like wearing belts and suspenders, but we are paranoid about CO poisoning. ... "
Volume
10alarm, wake, test, turns, thing
+70%
-30%
" ... Alarm good and loud ... "
" ... Loud alarm easy to read ... "
" ... It works great and it is pretty loud when you test it. ... "
" ... It has a loud alarm and is easy to check readings and for function check. ... "
" ... The audible alarm is good and LOUD ! ... "
" ... Scares the heck out of my pets when I use the "test" function, but works well and is loud enough to wake the whole house up in the event of an emergency! ... "
" ... Scares the heck out of my pets when I use the "test" function, but works well and is loud enough to wake the whole house up in the event of an emergency! ... "
Cables
10plug, long, wall, power, plugged
+70%
-30%
" ... The long cord makes installation easy ... "
" ... I like that is has a built in extension cord so you're not restricted to mounting it exactly where an outlet may be. ... "
" ... I love how you can disconnect the plug from the actual monitor and it has a long cord so you don’t need to have the monitor directly at your outlet. ... "
" ... It can be plugged in to your home power either directly or through a power cord. ... "
" ... Back up battery power available, long power cord to be plugged in. ... "
" ... The plug and cord are neatly housed at the back of the unit, it has constantly measured "0" (parts per million - ppm). ... "
" ... Love the ease of plugging this in - no wires, no installation! ... "
Overall performance
9works, fine, far
+78%
-22%
" ... It does the job for now. ... "
" ... does it job on guard for problems ... "
" ... Fast forward a week, same thing. ... "
" ... Does the job. ... "
" ... Works just fine. ... "
" ... Works great so far. ... "
" ... Works just fine. ... "
Network
9bedrooms, one, near, house, hallway
+100%
" ... Our new Nighthawk is in our living room by the front of our hallway where the first one was. ... "
" ... I have one on each floor and especially near the bedrooms at the top floor. ... "
" ... I have one on each floor and especially near the bedrooms at the top floor. ... "
" ... I am renting a townhouse so I purchased one for each floor. ... "
" ... I am pretty sure most homes have bedroom plugs located near the baseboards unless you live in a brand new home. ... "
" ... Now own four units located thru out the house. ... "
" ... I recommend that you have a Kidde Nighthawk on every level and most importantly in all bedrooms. ... "
" ... I am pretty sure most homes have bedroom plugs located near the baseboards unless you live in a brand new home. ... "
Design
9looking, elsewhere, design, avoid, big
+56%
-44%
" ... Very decorative design that fits in with any style, but most of all . ... "
" ... This is a very slick looking piece of junk. ... "
" ... Good to have as nd has a nice appearance. ... "
" ... Love the fact that you can see the actual CO reading on it ... "
" ... It works well and an attractive look. ... "
Controls
8test, push, zero, reset, press
+75%
-25%
" ... I like the push button max level indicator. ... "
" ... The peak level button is awesome, it lets you know what the peak level of CO that has been detected, even if it wasn't enough to set the alarm off. ... "
" ... the PEAK button never displays more than zero for me., but I guess that's a good thing :) ... "
" ... If you find this review helpful, please click 'helpful' button at the end of this product review. ... "
" ... Make sure press the test button to confirm. ... "
Sound Quality
8sound, would, 30, wake, sounded
+88%
-13%
" ... It sounds an 85 db alarm if it registers over 30 parts per million of carbon monoxide. ... "
" ... Appears to work well and hopefully, it will never sound an alarm. ... "
" ... It truly is a silent killer. ... "
" ... The power supply seems to be low noise analog and runs nice an cool. ... "
" ... THE SOUND IS PIERCING AND YOU WILL DEFINITELY RAISE OUT YOUR HOUSE AND BE ABLE TO EXIT THE BUILDING FOR SAFETY . ... "
" ... they will output an audible sequence of beeps. ... "
" ... they will output an audible sequence of beeps. ... "
ISP
7works, fine
+71%
-29%
" ... Recommend buying from this provider! ... "
" ... Just plug it in. ... "
" ... Both works fine. ... "
" ... Works just fine. ... "
" ... Works just fine. ... "
Defective Delivery
6opened, defective, damaged, came, recieved
-100%
" ... Came with smashed corner And bent prongs on the back. ... Had been opened before. ... "
" ... defective in less than 2 months. ... "
" ... The plug was damaged. ... "
" ... Recieved the package already opened. ... "
" ... There's not a link to return or exchange this defective item. ... "
Heating
6gas, propane, house, hot, heating
+100%
" ... Another near gas furnace and hot water heater in lower level of the house. ... "
" ... It works as best I can tell and I use natural gas for cooking and heating, however, using kerosene is something new for me. ... "
" ... Place in my house because i heat with propane gas ... "
" ... It caught our leaky furnace once. ... "
" ... Was able to replace the heat exchanger before there were any problems. ... "
" ... Was able to replace the heat exchanger before there were any problems. ... "
Device Stand
5way, far, zero
+60%
-40%
" ... I plugged it into the wall so far it seems to work perfect. ... "
" ... Using plug-in to outlet, can mount on wall also. ... "
" ... It plugs in, and it sits there on the wall displaying zero. ... "
Size
5size, big, traveling, travel, read
+60%
-40%
" ... It's nice to have a portable detector. ... "
" ... It is the right size and reliable. ... "
" ... Great product - especially if you’re traveling. ... "
Software Platform
4replaced, lasted, 10 years
+50%
-50%
" ... I replaced it with a new battery and it lasted ONE DAY before the error occurred again setting off again at a sleeping hour. ... "
" ... “ERR” message in screen and would not reset, according to my tenant. ... "
Sleep Tracking
4sleep, night, since, due, could
+100%
" ... I sleep better ay night in my new home now. ... "
" ... Nothing much to say specifically, but it helps me sleep better at night! ... "
" ... CO is so scary bc you can just pass in your sleep and never know what happened. ... "
" ... I sleep better at night knowing that it's always on guard duty! ... "
Device Compatibility
4works, life, device
+75%
-25%
" ... I plugged it in and it works. ... "
" ... This device possibly saved my life. ... "
" ... This device possibly saved my life. ... "
For Travel
3travel, one
+67%
-33%
" ... Great product - especially if you’re traveling. ... "
For Kids
3children
+100%
" ... Seems to be working kids are alive ... "
" ... It will help keep my daughter safe. ... "
" ... It's easy to read and to teach my older children how to read as well. ... "
As Gift
3+100%
" ... Perfect gift for new home owners. ... "
" ... I think it was a good gift for safety sake. ... "
Notifications
3alarm
+33%
-67%
" ... alarm message displayed "END" ... "
" ... very few false alarms . ... "
Other
3carbon monoxide, brand
+67%
-33%
" ... Please keep in mind the sensor that measures the CO has an 8-year lifespan and it will let you know it's time to replace it at that point. ... "
" ... This is a KIDDE brand CM sensor. ... First Alert is a fine brand for smoke detectors but when it comes to carbon monoxide sensors you really want to make sure you have a good brand. ... "
Accuracy
3accurate, one
+100%
" ... Better than cheap (less accurate) versions. ... "
" ... I originally bought it, for the sensitivity readings and that it showed you the readings. ... "
" ... They compared there expensive detectornto rhis one and said this one was extremely accurate. ... "
Lagging
3times, reset, numerous, go
-100%
" ... Will not reset, tried numerous times. ... "
" ... Will not reset, tried numerous times. ... "
" ... would go off than not go off after reset. ... "
Hair
3cut, garage
+100%
" ... In use in my garage has alarm four or five times gave me a chance to clear the air in the garage and were cut off vehicles that were running ... "
" ... Cut out one meal out with family that will likely pay for it. ... "
" ... Bonus: A+ grade to Kidde's packaging engineers for a package which you didn't have to use knives, scissors (a stick of dynamite?!) ... "
Storage
3+67%
-33%
" ... I have two of those ventless NG space heaters, including in my BR. ... "
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