Teracom TSM400-1-CP - pressure and CO2 sensor (Modbus RTU)

CO₂ (Carbon dioxide) is a colourless and odourless gas. It is the fourth most present gas in the Earth’s atmosphere. Its concentration, especially indoors, is important for the health and efficiency of the people in them. TSM400-4-CP is a multi-sensor that supports MODBUS RTU protocol over the RS-485 interface. The sensor measures CO₂ concentration and barometric pressure. The MODBUS device integrates an advanced non-dispersive infrared sensing element (NDIR) for CO₂ measurements. NDIR is recently the most popular principle for CO₂ concentration measuring. The principle is based on the absorption of infra-red (IR) light with specific wavelengths by CO₂ molecules.