The MCP9701A is an analog temperature sensor which has a measurement range of 0 to +70 Degree C.
The TMP36G is an analog temperature sensor which has a measurement range of -40 to +125 Degree C.
This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 1,000 ppm and combustible gas from 100 to 10,000 ppm. The sensor s simple analog voltage interface requires only one analog input pin from your microcontroller.
This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm.