In order not to damage the alarm, to provide an ideal protection, and to prevent unwanted alarms, please follow the instructions below where carbon monoxide alarms cannot be installed:
It is normal for short-term high concentrations of carbon monoxide to be produced in kitchens, furnace rooms and some burning appliances. If you install the alarm too close to these burners, it may sound too often and become a noise.
If you must install the alarm near kitchen or heating appliances, consider keeping them at a distance.

New model KD-125B Mini Smoke Alarm

Do not install in very dirty, dusty or greasy places such as kitchens, garages and houses. Oil, dust or household chemicals can contaminate or get on the sensor head of the alarm, preventing the alarm from working properly. Do not block the alarm vents. Install the alarm in a well-ventilated area where it will not be blocked by curtains, furniture, or other objects. Also do not install in places with poor ventilation, such as the tops of vaulted ceilings or pointed roofs, where carbon monoxide cannot reach the sensor head in time to give an early warning.
Do not install in strong winds from ceiling fans, near doors and windows that lead to the outdoors, near fresh air vents, or any other well-ventilated location. Rapidly circulating air from fans or fresh air from outdoors can affect the response of the alarm.
Do not install in places with temperatures below 4°C or above 38°C, including rooms, attics, hallways and garages. Extreme temperatures will affect the sensitivity of the alarm.