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2 inch sensor also features a nearby magnet; open the door or window, and a magnetometer in the Detect is triggered, sounding the alarm. In a particularly handy feature, there's a button you can press on the Nest Detect that disarms the sensor so you can open the door without bothering everyone in the house with an alarm; the sensor rearms when the door is shut. Nest DetectThe final piece of the puzzle is Nest Tag, which attaches to your keyring. It allows you to tag in and out of the house for those times you don't want to fiddle with the keypad on the Nest Guard. Nest executives stress that the 1. 46 inch circular Nest Tag is pretty durable, capable of surviving a trip through the washing machine if you forget to remove it from your pocket.alarm companies in las vegas
Like the First Alert SA511CN2 3ST discussed in the section on photoelectric smoke alarms, the SCO501CN 3ST uses radio technology to set up a wireless network with other First Alert interconnectable alarms smoke, CO or combination without the complications that a hardwired interconnected alarm system would entail, though you might need to experiment a little with alarm location to make sure that each unit is within range of at least one other interconnected alarm. Reviews of the First Alert SCO501CN 3ST are mostly strong. It receives a recommendation from Consumer Reports for its performance as a CO detector, but only a middling rating as a smoke detector as it only has photoelectric sensors for that function once again, Consumer Reports only recommends smoke detectors with both types of sensors, though not all experts agree that those types of alarms are the best option. Still, the SC501CN's performance earns the highest possible grade both when it comes to smoldering fires, and as a CO detector. It receives top ratings across the board for detecting high concentrations of CO, low concentrations of CO and the quality of its alerts. The Kidde KN COSM BA Est. $35 is also worth considering. This combination smoke and CO alarm has been around for a number of years, and was previously known as the Kidde KN COSM B. It has two key differences compared to the SCO501CN 3ST: It is a stand alone detector that does not communicate with other alarms and the smoke detector uses ionization, not photoelectric technology. It has a voice annunciator that will identify the type of hazard fire or CO, but can't relay that to other detectors. It's not been professionally reviewed, but there's a large body of mostly satisfied users that post feedback at Amazon, where its overall score is 4.