Halma plc, together its subsidiaries, provides technology solutions in the safety, health, and environmental markets in the United States, Mainland Europe, the United Kingdom, the Asia Pacific, Africa, the Middle East, and internationally. It operates through three segments: Safety, Environmental & Analysis, and Medical. The Safety segment provides fire safety, fire detection and fire suppression; safe movement in public, commercial, and industrial spaces; elevator safety; communications in emergencies; control of access in potentially hazardous industrial and commercial environments; electrical safety; and the safe management of pipelines and storage assets solutions. This segment serves shops and restaurants, healthcare facilities, and offices and stadiums; industrial and logistics assets; public spaces and critical infrastructure; and aerospace, and rail and automotive markets. The Environmental & Analysis segment offers optical, optoelectronic, and spectral imaging systems; environmental monitoring, water and waste water analysis and treatment, gas analysis and detection, and optical analysis systems. It serves the optical analysis, water analysis and treatment, gas detection, and environmental monitoring markets. The Medical segment provides critical fluidic components used by medical diagnostics and original equipment manufacturers; components, devices and systems that provide information and analytics to understand patient health and enable providers to make decisions across the continuum of care; technologies and solutions to enable in-vitro diagnostic systems and life-science discoveries and development; and technologies that enable treatment across clinical specialties. This segment serves the life sciences, health assessment and analytics, and therapeutic solutions market. The company was incorporated in 1894 and is headquartered in Amersham, the United Kingdom.