![]() The unit is powered only by a 9-volt battery, so you’re not limited on where to place the carbon monoxide detector because of outlet proximity or electrical wire connections. The First Alert Battery-Operated Carbon Monoxide Detector uses a proven form of detection in the form of an electrochemical sensor. Besides the audible 85-decibel alarm, a flashing LED also provides a visual indicator of danger. For under $25, a basic model, like the First Alert CO400, continuously monitors for harmful levels of carbon monoxide and sounds the alarm if such a condition develops. With this parameter in mind, the Kidde Nighthawk is an excellent choice.ĭimensions: 6.06 x 3.75 x 1.75 inches | Power Source: Plug-in, with 9-volt battery backup | Smoke Detector: No | Warranty: 10 yearsĪ budget carbon monoxide alarm is a small investment towards peace of mind. Johnson-Arbor suggests that carbon monoxide detectors should always be placed in or within 10 feet of any sleeping area. When we tested, there were children in another room who were on high alert once the alarm started sounding.ĭr. We found that the volume gets your attention. However, it is loud enough that we feel confident it would wake most people while sleeping. The intermittent pattern of the alarm-four beeps, followed by 5 seconds of silence-may not immediately grab your attention. It provides a reading of current CO levels and is helpful for interpreting the beeps that the device may emit. The digital display is a helpful feature not always found on carbon monoxide detectors. ![]() It has just two buttons: for testing the unit and to recall peak levels of detected carbon monoxide (CO), measured in parts per million (PPM). A 9-volt battery backup gives you confidence that the Kidde Nighthawk keeps monitoring for carbon monoxide, even if there is a power outage. The Kidde Nighthawk also stands out for having a simple interface. Once it powers on for the first time, it lasts 10 years before signaling it's time for a replacement. This plug-in model requires no electrical know-how and takes up just one standard outlet. We found it easy to use and reliable, earning it our top recommendation for a carbon monoxide alarm. It doesn’t include a smoke detector function, which was our biggest point of concern. However, it’s an ideal choice if you’re specifically looking for a carbon monoxide alarm and already have hardwired smoke detectors in your home. The Kidde Nighthawk has one purpose: to monitor for dangerous levels of carbon monoxide. The Spruce Home Improvement Review Board.*Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.Carbon monoxide detector utilizes an electrochemical sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected.Peak level memory displays highest carbon monoxide level recorded since previous reset or unplugging.Updates digital reading every 15-seconds.Displays carbon monoxide levels from 30 to 999 PPM.9-Volt battery backup provides protection during power outages.Test/reset button to check for proper operation and reset the unit.85dB alarm sounds when carbon monoxide reaches dangerous levels so you can protect your family.Plug-in carbon monoxide detector with digital readout.Protection continues during power outages thanks to a 9-Volt battery backup. The carbon monoxide level sensed is continuously displayed and updated every 15-seconds and the peak level memory shows the highest level of carbon monoxide present since the last time the unit was reset or unplugged. The digital readout of the Kidde Plug-In Digital Carbon Monoxide Alarm with 9-Volt Backup continuously displays carbon monoxide levels from 30 to 999 parts per million (PPM) and will sound an 85dB alarm when dangerous levels are reached.
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