City Technology leads the global market in the design and manufacture of innovative and reliable gas sensors for use in personal and fixed life safety systems.

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Established by a team of scientists at London’s City University campus in 1977, City Technology has grown into an international business employing over 400 staff in facilities in the UK, Germany, China, Taiwan and the USA.  They share a single minded commitment to driving product quality to new levels and setting the standard in gas sensor performance, enabling instrument manufacturers around the world to offer the most accurate and reliable gas detection solutions.

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Every day, millions of people around the world trust City Yrchnology's sensors to keep them safe and protect them from harmful gases.  Not only in harsh, hazardous environments, but also in transit situations, at home, at work, even in hospitals.