Avoid placing your Carbon Monoxide Sensor within 3 feet of a cooking appliance, in a tightly enclosed space, in a damp or humid area, or directly next to a door, window, or air vent.
Do not place the sensor in an area where the temperature could drop below 40° F or rise above 100° F.
The sensor should not be installed on metal surfaces or in an area with a large quantity of metal or electrical wiring.
Avoid dead air spaces, such as the top of a vaulted ceiling, as this may not detect CO in time to provide early warning.
Do not place the sensor in an area where dust or dirt could block the sensor.