Thermal Conductivity CO₂ Sensors
Browse manufacturer-documented thermal conductivity CO₂ products. Compare low-ppm indoor air quality sensors and high-concentration gas mixture sensors, with ranges, interfaces and additional sensing features shown side by side. Choose up to three products to compare.
Products
Sensirion STCC4
Compact thermal conductivity CO₂ IC for IAQ and connected equipment.
Sensirion STC31-C
Thermal conductivity gas concentration IC for high-CO₂ mixtures.
Sensirion STC31
Legacy high-range CO₂ thermal conductivity sensor.
DFRobot Gravity STCC4 SEN0678
Integration-ready module using Sensirion STCC4 and SHT40 RH/T.
Compare Selected Thermal Conductivity CO₂ Sensors
Manufacturer-specified values are shown side by side. Different manufacturers may use different test conditions or definitions.
Important: This is a specification comparison, not a product ranking. Open each product page for context and official manufacturer sources.
Range note: 100 vol% corresponds to 1,000,000 ppm; high-concentration sensors are not interchangeable with typical IAQ modules. STCC4 and Gravity STCC4 use the same Sensirion CO₂ sensing die; the Gravity module adds SHT40 temperature/humidity measurement. Manufacturer sources: STCC4, STC31-C, STC31, Gravity STCC4.