Action Instruments SA has been the sole Southern African distributor for Rotronic (Switzerland) since the 1980s, supplying precision humidity and temperature measurement instruments from their Braamfontein office. They provide a comprehensive range of sensors, transmitters, data loggers, and the Rotronic Monitoring System (RMS) for cloud-based environmental monitoring. The company maintains a local repair and calibration laboratory for technical support.

Cold Chain Relevance: Action Instruments provides pharmaceutical-grade temperature and humidity monitoring solutions meeting GxP requirements and SAHPRA compliance standards. The Rotronic Monitoring System enables cloud-based monitoring of cold rooms, freezers, and cleanrooms with data protection during power or communication failures (44,000 measurement pairs stored locally). Swiss precision sensors with ±0.3°C accuracy and long-term stability address critical pharmaceutical and biotechnology cold chain applications. Local calibration services ensure ongoing measurement accuracy for regulated environments requiring validated temperature control.