Posted by a reviewer on Amazon

The things i dont like is the case isnt very good and it doesnt have a magnet or anything to stick to heat registers but i put a magnetic cable tie on it and thats working pretty well

Posted by a reviewer on Amazon

It will monitor the air to see if there a my issues

Posted by a reviewer on Amazon

You get real time information and you can walk around the house to quickly identify the source of the problem

Posted by a reviewer on Amazon

In our case it lead to a gas water heater that needed repair

Posted by a reviewer on Amazon

If your alarm does go off the testo device will give you the extra information you need about the concentration of the gas and where it is coming from

Posted by a reviewer on Amazon

Attached copy of chart included with the device shows how lethal co can be

Posted by a reviewer on Amazon

The only improvement i can suggest for this device is to back light the display

Posted by a reviewer on Amazon

After the meter arrived i tested it using co test gas 1850ppm co in nitrogen mixed with a 110 dilution ratio with air in a sealed plastic bag with the meter inside