Here at CO2 Alarms we try and review many different types of carbon dioxide(CO2),Carbon Monoxide(CO) as well as smoke detectors. In studying different types of units battery powered, hard wired detectors and combination devices. If you are looking for a unit that you can plug into the wall that also has a battery backup you should check out the Kidde 900-0234 Nighthawk Carbon Monoxide Alarm. This unit has several features that make it above most others. Here read a few of the great features
First- The digital read out gives you a visual instant readout of the CO levels in your home.
Second;- A LOUD audible alarm warns you when your levels have exceeded a safe level. This sound also lets you know if the battery backup is getting low.
Third- This detector has a test reset feature that allows you to test the device to make sure all is working well.
Forth- The Nighthawk alarm has a life expectancy of seven years. This is far longer than most of the other alarms on the market. It also has a seven year warranty to back this up.
Conclusion 4 stars. With so many others saying this unit is great it is work a look. Check out the Amazon page on the Kidde 900-0234 Nighthawk Carbon Monoxide Alarm
If you have used this unit or have found that you like better please share your in put with us below.