Halma plc specializes in design, manufacturing and marketing of security equipment. Net sales break down by family of products as follows:
- infrastructure surveillance sensors and industrial security equipment (42%): fire and smoke detectors, electronic elevator systems (door control systems, emergency communication equipment, display modules, etc.), automatic door sensors, single-use pressure relief valves, mechanical, electrical, and electromechanical interlocks, flammable and hazardous gas detection systems, etc.;
- healthcare equipment (29%): optical magnification and diagnostic equipment, fluid management systems (pumps, probes, valves, connectors, and tubes), etc. ;
- environmental analysis equipment (29%): photonic products, water storage, treatment, and analysis equipment, etc.
Net sales are distributed geographically as follows: the United Kingdom (15.1%), Europe (20.3%), the United States (42.2%), Asia/Pacific (15.2%), Africa/Near East/Middle East (3.4%) and other (3.8%).
HALMA PLC 
