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When every second counts, you'll have your warnings spoken to you in a loud-volume voice: “Fire, Fire!” or “Warning! Carbon Monoxide!” Two-alarm system also announces “Low Battery” when batteries need changing. Also includes chirp signal, flashing LED and test/reset button. Uses three AA batteries (included).
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The Kidde KN-COSM-BA battery-operated carbon monoxide and smoke alarm combines two important safety devices into a single unit. This alarm includes a voice warning system that makes four announcements: fire, carbon monoxide, low battery, or smart hush activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. This unit uses three AA batteries, protecting you and your family even during a power outage.
This alarm uses ionization-sensing technology for the smoke alarm. Ionization-sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric-sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help ensure maximum detection of the various types of fire that can occur within the home.
KN-COSM-BA Battery-Operated Combination Smoke and CO Alarm at a Glance
- Employs both smoke and carbon monoxide sensors
- Stand-alone battery-operated alarm is easy to install throughout the home, as no wiring is needed
- Features a hush button to silence the alarm for non-emergency situations like a smoky dinner
- Voice alarm eliminates confusion and clearly warns of smoke/CO danger or low battery
Protects from two different hazards, smoke and carbon monoxide, and has a different voice warning for each hazard. .
The battery-operated KN-COSM-BA offers easy installation. .Combination Smoke/Carbon Monoxide Alarm
The Kidde combination carbon monoxide and smoke alarm includes a voice warning system that eliminates confusion and clearly warns you and your family of a smoke or carbon monoxide (CO) danger, of low battery, or of hush-mode setting.
Alarm Warnings
Fire: The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message: "Fire! Fire!" The alarm will repeat the pattern until smoke is eliminated.
Carbon Monoxide: Four short alarm beeps followed by a verbal warning: "Warning--carbon monoxide!" This continues until the unit is reset or the CO is eliminated.
Low Battery: One chirp followed by warning: "Low battery." The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour, the red LED light will flash once every minute and will be accompanied by the chirp sound. The low-battery warning will only sound once every 15 minutes.
Voice Hush Indication: "Hush activated" and "Hush canceled" voice announcement.
Peak Level Memory: If the alarm had detected a CO level of 100ppm or higher when the test/reset button is pressed, the unit will announce, "Carbon monoxide previously detected" to warn of the CO incident.
Trademarked Hush Feature for Convenience
By pressing the hush button, you can easily and safely silence nuisance alarms caused by non-emergency situations, such as overcooked dinners.
This feature desensitizes the alarm for approximately 10 minutes. If the smoke is not too dense, the alarm will silence immediately, the unit will verbally announce, "Hush mode activated," and the green LED will flash every two seconds for approximately 10 minutes.
Reliable Battery Power, Indicator LED, Test Feature and Low-Battery Warning
The battery-powered alarm provides continuous protection, even during power outages. Because this alarm only helps protect you if it's working, this unit features a red LED that flashes every 30 to 40 seconds to indicate that it is operating correctly. For additional peace of mind, the alarm also contains a test/reset button that enables you to periodically test its circuitry and horn.
If any form of battery failure is detected, the red LED light will flash and the unit will chirp one time, followed by the warning message, "low battery." This cycle will occur once every minute, and will continue for at least seven days.
Seven years after initial power up, this unit will chirp" every 30 seconds. This is an operational end-of-life feature that will indicate that it is time to replace the alarm. UL 2034, the independent standard applicable to CO alarms, requires CO alarms to have an end-of-life warning. This requirement went into effect in March 2007, meaning any CO alarm manufactured after April 2007 with a UL listing must have this feature. Most states that require CO alarms in residential dwellings mandate that the alarm meet the UL 2034 standard.
The unit measures just 5.75 inches in diameter and 1.7 inches deep, and it features a neutral white finish. It includes tamper-resistant features to deter vandalism or theft. This combination smoke/CO alarm is UL listed, so you can be confident of its quality, and it is backed by a ten-year limited warranty.
About Kidde: A UTC Fire and Security Brand
Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb detector lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.
What's in the Box
Combination smoke and carbon monoxide alarm with mounting bracket and mounting hardware, three AA batteries, a and bilingual (English/Spanish) user's manual.
Roberta Moore
Reviewed in the United States on November 17, 2024
Ran into some issues installing them. A quick call to the company and they told us what we were doing wrong! Easy fix and they work great!
T.M. Reader
Reviewed in the United States on February 25, 2014
This purchase was an exact replacement for the previous one in my bedroom . . . which automatically deactivated itself at the end of its 7 year lifespan (a built-in feature of this alarm).This alarm provides a voice system as well as the beeping alarm to alert the owner of either "fire" or "carbon monoxide". Both features have sounded in my home in the past, resulting from: using a cooking stove as a heat source, and on another occasion, closing the damper on the fireplace too soon after I thought the fire was out. So --- this thing works.Nice silence feature allows you to silence nuisance alarms (such as smoky cooking events) for 8 minutes simply by pressing the test button. Takes 3 AA batteries (which I prefer to the 9 volt battery that most detectors require).And, I love the mounting system: The mounting plate screws to the ceiling or wall, then the detector unit snaps into the base plate with an easy push and a turn. This allows the owner to easily take it down for battery replacement (instead of standing on a chair trying to snap in a battery). It also allows the unit to be taken down and relocated elsewhere (like outside or the garage), when there is a persistant nuisance alarm situation (like smoky cooking).This is my second one and I've found them to be trustworthy and easy to operate and maintain. 5 star device.
NLee the Engineer
Reviewed in the United States on October 10, 2012
I bought this last July, since one of my old carbon monoxide alarms started 'chirping' (due to end-of-life). So far the Kidde alarm seems to work really well. Of course, as with any safety devices, you never know it actually works until something BAD happens. So it is more for "peace of mind" than anything else.The 'Talking Alarm' feature is a great help because it makes the device so much easier to use than any of my previous detectors. For example, once I inserted three AA batteries, the device goes through the test procedure, by saying"Testing""Fire, Fire""Warning, Carbon Monoxide"As the battery voltage gets too low, the device will actually say "Low battery". That means there's no need to dig up the product manual and struggle to read the tiny prints, in order to understand the meaning between 'long beep' or 'short beeps', and so on.If you don't have all three AA batteries installed, a safety latch prevents the device to be mounted to the base plate. This is a good safty feature, since it prevents people from simply hanging an alarm on the ceiling without batteries inside.The battery consumption is very low. I measured 0.10mA in standby. An alkaline AA battery has a rated capacity of around 3000mAh in light load. So a set of 3 AA alkaline cells should last for 30,000 hours, or over 3 years. By the way, all carbon monoxide detectors have a built-in termination date of around 7 years (something to do with the half life of the radioactive isotope in the detector). So remember to replace them promptly.[Side Note]Some people may want to use low-self-discharge rechargeable batteries such as in smoke detectors. But that does not make economical sense in this case, since you only replace/recharge the batteries once every 2-3 years. Also in general it is not safe to use rechargeable NiMH batteries in safety devices. This is because the low battery detection circuit is designed for alkaline batteries. The voltage profile of alkaline cell starts from 1.6V and drops linearly as the battery is used up. The low-battery warning is designed to give at least one week of warning before the voltage drops too low. In the case of NiMH cell, its voltage profile stays flat at around 1.25V for most of its discharge period. But it drops rapidly as the battery is exhausted. So the warning period could be shortened to a few days of just hours. For the same reasons, using is also not a good idea.
Blair
Reviewed in the United States on February 1, 2007
I've installed installed two of these Kidde brand combination smoke and carbon monoxide detectors in my elder parents home. I have one in my own home as well and have found them all to be reliable and trouble free. What attracted me to this model were its many features:First, it has a low profile, attractive and unobtrusive design.Second and perhaps most important, it has a voice speaking function that, in addition to the 85db alert horn, will speak out clear warnings: "FIRE, FIRE" or "DANGER: CARBON MONOXIDE". I think that this feature is a terrific addition toward modern life-safety technology. Indeed, you will likely see more voice warning devices in the near future.We rely on these detectors to warn us, especially at night when we are sleeping. Awakening to this detector from a deep sleep helps orient you quickly by telling you the specific danger -- clearly and unmistakably. Notably, recent studies have shown that children can sleep through traditional smoke detector alarms, but will respond to voice warnings -- which this unit provides. Thus, placed in or near bedrooms this device can be a true lifesaver.Another favorite feature is ease of installation. It was a breeze and truly could not be simpler. A screwdriver is all you need. A small power drill/driver would speed the process, but is not necessary. Two screws into the ceiling or wall and you are done with the mounting bracket. The detector then just clicks in to place with a clockwise flick of the wrist. This is a do-it-yourselfer's dream. It doesn't get any easier!Battery maintenance is easy too as all you need do is turn the detector counter-clock wise a few clicks, and down it comes. You slide open the battery cover, take out the old batteries and pop in the new. Replace the detector back in the attached ceiling bracket, give it a slight turn and in it goes with a firm click. Done! Easier than screwing in a light bulb.Finally, the price is right! Under $40 for a unique life-safety device that is quickly installed and easily maintained.I have elected to use Energizer lithium batteries and replace them every 12 months -- with no problems. You may wish to change the batteries every 6 or 9 months. Duracells would also be a good choice. I personally would not use the cheaper, so called "heavy duty" batteries in a life-safety device.I should add that I would also suggest that if you have a home with multiple levels or an apartment with several rooms, having a separate stand-alone carbon monoxide detector elsewhere in the house as part of a total home plan would be a wise investment. Kidde also makes a fine combination model that protects against Carbon Monoxide and Explosive Gas. That unit, which has a digital display, runs on electricity and has a battery back-up system. It plugs in any electric outlet and can stay in the wall socket, or it can be placed flat on a table or dresser.I would also recommend Kidde's dedicated Dual Sensor combination Photoelectric/Ionization smoke detectors. These dual sensor devices provide maximum warning under fast or slow moving fire conditions -- conditions coming from a smoldering mattresses (slow) or drapery (fast) fire, just two examples. As one never knows what kind of fire could occur, these are the most versatile.Be sure to test your alarm regularly. REMEMBER that most Carbon Monoxide detectors NEED TO BE REPLACED about every 5 to 7 years (see manufacturer's guidelines). **This model has a built-in "end of life" function that beeps when the unit is 7 years old -- indicating it's time to replace it with a new one.** Similarly, smoke detectors have a useable life span as well. It's usually a little longer than carbon monoxide detectors, typically 10 years, but do check your manufacturer's guidelines.Hope this was helpful.
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