Serrax Technologies LLP

The CDM901 Portable CO₂ Monitor is a high-accuracy air quality device powered by an NDIR CO₂ sensor with 0.1% resolution for precise measurement from 0 to 5000 PPM. It delivers fast results with a T90 response time under 30 seconds and performs reliably in 0–50°C temperature and 0–99% RH environments.

Features a clear graphic LCD for real-time data visibility, user-activated auto calibration, and a rechargeable battery with up to 20 hours backup, making it ideal for indoor air quality monitoring, HVAC testing, workplaces, labs, and environmental surveys.

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COA109 Portable CO Monitor is a micro-controller based instrument which shows real time CO values and records them continuously. Software provided by Rave allows you to download the data to MS Excel for trend analysis. Typical applications include continuous outdoor air quality monitoring, gas detection surveys, environment consulting, research studies and monitoring impact of vehicular emissions.