This is a brief overview of the Renesas ZMOD4410 gas sensor platform, which provides best-in-class stability and sensitivity to identify trace gases in various indoor environments. These air quality sensors feature a miniature package with waterproof capability, an integrated ASIC, and a MEMS sensing element comprised of a controlled heater and proven metal oxide (MOx) material. The firmware upgradeable platform makes the ZMOD4410 portfolio capable of providing a variety of measurement options by varying the method of operation or changing the firmware used to interpret the resistance measurements.