![]() The unit does not come with a cord extension so its installation placement is limited to an electrical outlet. Very specific brand and model requirements for battery replacements. Features a single LED indicator and a test/reset button. Kidde Plug-in Carbon Monoxide Alarm - KN-COB-DP2 Plug-in unit, backed up by two AA batteries. However, its LCD display is smaller than those of other products in this category, which makes it a little hard to interpret the readouts if you're not close to the device. CO concentration monitor is accurate, less than 5% error. Second to last place in our quickness of response test, detecting CO at 250 ppm after 20 minutes. X-Sense Combination Smoke and Carbon Monoxide Alarm: This combo unit comes equipped with a 10-year sealed lithium battery and a digital display that shows real-time CO concentration, battery level and working status. CO readouts on its screen are the least accurate of the bunch, at 15% error, which is by no means the end of the world. Not the fastest at detecting carbon monoxide (ranked 4th). Great unit if you want an affordable device that is capable of monitoring real-time CO levels as well as battery life. Kidde Battery Operated Carbon Monoxide Alarm - KN-COPP-B-LPM: Battery powered, digital display, test/reset and peak CO buttons, visual cues for alarm and operational status. Fortunately, it did a better job at quickly detecting smoke and fire hazards during our most recent round of smoke detector tests. Unfortunately, it underperformed its competition in our quickness of response test, with a bottom-three result in the 250ppm run and last place in the 400ppm run. Nest Protect Smoke and Carbon Monoxide Alarm : Very compelling option for those who don't mind spending a little more in exchange for a wide range of smart features including location specific voice alarm, color-coded emergency notifications and smartphone app control for silencing and routine testing. Other carbon monoxide detectors we've tested Shorter bars indicate faster alarm times. Note: Time needed to sound alarm after exposure to different CO thresholds, mm:ss. As you may understand, we wanted to limit our exposure while making sure our results were repeatable.įirst Alert CO400 10:46 7:03 First Alert Onelink 1042136 11:42 8:10 First Alert CO615 12:12 8:07 Kidde KN-COPP-B-LPM 14:10 8:40 X-Sense SC07 20:05 7:50 Nest Protect 06C 17:50 12:44 Kidde KN-COB-DP2 20:22 10:53 We want to assess how long the carbon monoxide detectors take to react to those conditions. Once the concentration inside our chamber reaches at least 250 ppm or 400 ppm, we stop feeding the gas and start a timer. We start by feeding our gas mixture to the chamber, closely monitoring the carbon monoxide concentration on the Testo. This might all sound excessive, but it's always good laboratory practice to put safety first, especially when you're dealing with such a stealthy and prolific killer. On top of all that, our respirator suits and amply ventilated location ensure that we get a constant stream of fresh air at all times. One near the valve, to ensure there are no leaks, and another that must be worn by the person carrying out the experiment to make sure there is no CO buildup in the test station area. Two additional portable CO detectors are used. We installed a gas flow regulator on our tank to avoid pressure spikes, followed by a gas line to feed our gas mixture into the chamber.
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