Abstract: a gas detecting device has a gas detecting region on a detection card. A window extends over the detecting region, protecting it from ultraviolet light. The window includes air inlets that allow air to travel underneath the window and interact with the detecting region. Filters block or remove any contaminants in the air prior to the air interacting with the detecting region. As a result, false positives are minimized and the functional lifespan of the detecting device is extended.

Abstract: A sun visor sensor mount has an elongate planar base with an arcuate biased clip configured for compression fit of the device to a sun visor of a vehicle. The device has a rectangular casing for securely retaining a bendable card with an air sensor device such as a carbon monoxide sensor. One or more lips extend into the opening of the casing to hold a bendable card within the casing in place. A bendable card may be inserted or removed by flexing the card. An aperture in the back of the casing may be used to insert a finger or other device to push a bendable card out of the casing.