Which type of device serves as a primary method for detecting gases like carbon monoxide?

A carbon monoxide (CO) detector serves as the primary device for detecting the presence of carbon monoxide gas in the environment. This type of detector is specifically designed to sense the unique properties of carbon monoxide, such as its chemical composition and the way it interacts with specific sensors within the device. When carbon monoxide is detected, the detector triggers an alarm, providing a critical warning to reduce exposure to this potentially lethal gas.

In contrast, smoke detectors are designed to sense smoke particles from combustion and are not effective at detecting gases like carbon monoxide. Temperature sensors monitor heat levels in the environment but are unrelated to gas detection. Humidity monitors track moisture levels in the air and do not have the capability to detect gases either. Therefore, carbon monoxide detectors are the only devices specifically made for that purpose, underscoring their importance in safety measures against harmful gases.