How can we help?
Please use the form below to drop us an e-mail. If necessary, please provide exactly what your alarm’s status screen is displaying. Phone calls work too >> (833) 825-0217
Customer Service Hours:
Monday – Friday 8 AM - 4 PM CST
Frequently Asked Questions:
- My carbon monoxide detector is going off, what should I do next?
- How long will my carbon monoxide detector be covered under warranty?
- How do I activate my carbon monoxide detector?
- How do I de-activate my carbon monoxide detector?
- What should I do if I hear a faint hum from my carbon monoxide detector?
- Where should I install my carbon monoxide detectors?
- Where do I find the user guide?
My carbon monoxide detector is going off, what should I do next?
Is your alarm notifying you with this message?: “Dangerous Level of Carbon Monoxide detected! Evacuate immediately. Dial 911!”
If “Yes,” – follow these instructions:
- This is an emergency/life safety situation.
- Find a phone away from the area and immediately call 911.
- Immediately move to fresh air – outdoors or by an open door or window. Check to make sure that all residents are accounted for. Do not re-enter the premises or move away from the open door or window until the emergency services responder has arrived, the premises have been aired out, and your carbon monoxide alarm returns to and remains in its normal operating condition. Be sure to follow the directions from utility employees or emergency responders who are on site.
If "No," and your alarm is providing a non-emergency message, follow the alarm's instructions. You may also view the user guide online:
(English Version) or (Spanish Version).
How long will my carbon monoxide detector be covered under warranty?
Your alarm is warrantied for 10 Years from the date of purchase. To obtain a replacement, please provide the info shown below. The warranty covers product replacement - refunds are not provided.
How to obtain warranty service:
If service is required, do not return the product to your retailer. To obtain fast warranty service, contact customer support:
Call: (833) 825-0217 (Monday – Friday 8 a.m. - 4 p.m. CST) or,
Email: Submit the form on this page
To assist us in serving you, please have the model number and date of purchase available and provide your shipping address (if requesting a replacement).
The complete warranty is displayed on the closing page in the online user guide:
(English Version) or (Spanish Version).
How do I activate my carbon monoxide detector?
*NOTE: YOU MUST ACTIVATE YOUR MODEL 7200 (PLUG-IN ALARM) PRIOR TO PLUGGING INTO AN OUTLET, OR PRIOR TO ATTACHING MOUNTING BRACKET (MODEL 7000 BATTERY ALARM):
- View the back of your alarm
- Activating the Battery: Move the activation switch to the ACTIVATED position. If necessary, you may use a small tool to help activate switch if needed. Once unit is activated, it cannot be turned off, only permanently deactivated.
*NOTE: Alarm will beep and will announce that it has been activated, both audibly and visually. Please follow the directions. Full instructions are listed under “How to Install This Alarm” in the user guide online:
(English Version) or (Spanish Version).
How do I de-activate my carbon monoxide detector?
*NOTE – DEACTIVATION IS PERMANENT, AND CANNOT BE REVERSED
How to permanently de-activate the alarm:
This CO alarm contains a sealed-in, non-replaceable / non-removeable battery. Once it reaches the end of its service life, or after 10 years, whichever comes first, the unit will alert you that it needs to be replaced, and you will need to install a new CO alarm.
You can permanently deactivate the unit by using a tool to break the tab underneath the cross-hatched area and moving the activation switch to the DEACTIVATED position. Full instructions are listed under “How to Install This Alarm” in the user guide online:
(English Version) or (Spanish Version).
Where should I install my carbon monoxide detectors?
It is recommended to install a working CO alarm on every level and in every bedroom*
IN A SINGLE-LEVEL HOME: Install at least one CO alarm near or within each separate sleeping area. For added protection, install an additional CO alarm at least 20 feet (6 meters) away from the furnace or fuel burning heat source.
IN A MULTI-LEVEL HOME: Install at least one CO alarm near or within each separate sleeping area. For added protection, install at least one CO alarm on each level of the home. If you have a basement, install that CO alarm at the top of the basement stairs. For added protection, install an additional CO alarm at least 20 feet (6 meters) away from the furnace or fuel burning heat source.
IN A MOBILE HOME: Install CO alarms on inside walls ONLY. Uninsulated outside walls and roofs of mobile homes often transfer heat and cold from outdoors.
How high up should I install carbon monoxide detectors?
Do not install the alarm closer than 4 inches (102 mm) from ceiling, or more than 6 feet (1.8 meters) from the floor.
*The National Fire Protection Association (NFPA) recommends that a CO alarm should be centrally located outside of each separate sleeping area in the immediate vicinity of the bedrooms. For added protection, install additional CO in alarms in each separate bedroom, and install one on every level of your home. If your hallway is longer than 40 feet (12 meters), bedroom CO alarm at BOTH ends of the hallway.
For more details, you can view the user guide online:
(English Version) or (Spanish Version).
Where can I find the user guide?
If you no longer have your printed user guide, you can view the user guide online:
(English Version) or (Spanish Version).
What should I do if I hear a faint hum coming from my carbon monoxide detector?
Your CO Alarm is designed to provide audible warnings when appropriate but should otherwise be quiet during operation. If you believe you hear a sound or see a message other than the standard messages shown in the user guide, please contact customer service. You can view the user guide online:
(English Version) or (Spanish Version).
Knox Safety will repair or replace the product, or any component of the product found to be defective during the 10-year warranty period. It is easy to request warranty service by providing your specific details and contact information using the form on this page, or by calling (833) 825-0217 (Monday – Friday 8 a.m. - 4 p.m. CST).
