Firex AA Battery Powered Carbon Monoxide Detector (2-Pack)

Hello.NFPA 720 was withdrawn at the NFPA Annual 2018 revision cycle. NFPA 720 requirements have been incorporated into NFPA 72. The Council voted to approve the withdrawal of NFPA 720 on August 14, 2018. This alarm is NFPA 72 and UL 2034 compliant, though NOT UL 2035.

Yes and there should be number zero

Typically, both CO and smoke alarms will display a GREEN light if the unit is "working". RED lights typically mean either that the alarm has been activated, or that there is an issue with the alarm. You should always save the pamphlet that comes with smoke alarms and with CO alarms. They contain information as to what both the color of the lights mean, and what their "flashing" sequence indicates. If you do not have the pamphlet from the unit, contact the manufacturer who will answer any questions you have, and may even replace the unit if it is not functioning properly.

When you say the red light is on, do you mean it is flashing every so often or that it is staying on constantly? Normally, the Green LED should flash every 30 seconds with a 0 or the current reading of carbon monoxide on the display. Please refer to the owner's manual under Operating and Alarm Characteristics and call us with the alarm in hand at 1-800-880-6788 so we can help you figure out what the alarm is doing and get this resolved for you.

Hello. This alarm will show 30 PPM to 999 PPM

Hello. No. It is not designed to be stuck with adhesives. But it can be placed just on a table or a counter without installing it on the wall at all. We strongly recommend that if you have it on a counter or a table that it not be higher than 3 feet. It is rated and designed to usually survive a fall of 3 feet or less.

I didn't bother mounting them to walls, just placed them on furniture in areas I wanted covered where they are within easy reach if I need to check them or change the battery. You may be able to use tape such as duct tape but that may leave a mark or blemish on the wall.

If you want to attach it to a wall, you must use a screw. However, I have put my device on top of a tall cabinet in some cases in lieu of attaching to a wall.

Hello. Carbon monoxide is nearly the same weight as air and mixes very freely with the air and will follow the air flow of the house. Carbon monoxide can be read at any height. Eye level is very slightly better because it is very roughly the height at which people breathe and also makes it easier to read the display. Location in the house is more important. You will want at least one alarm per floor and every bedroom should have one alarm near enough to wake all of the occupants sleeping in the bedroom if the alarm goes off.

I installed mine at about 5.5 Feet high

I have put them anywhere between 4 and 7 feet depending on where I am using them.

Hello. No. This alarm only detects carbon monoxide. You will want our explosive gas and carbon monoxide alarm, the KN-COEG-3

I don't know. Read the back of the package to see if it states this. If you don't have the package, do a Google search for this product.

Follow the manufacturer's instructions. Mike

Hello EyesWideOpen, Thanks for reaching out. It is recommended that the batteries be replaced every 6 months to 1 year.

Hello Dan, Thanks for reaching out. The unit will sound at 70 PPM after 2-4 hours of "sustained" exposure. the higher the PPM, the faster the unit sounds.