Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. Service Technicians diagnose problems and perform service and repairs on card access, CCTV, burglar alarm systems, electronic fire alarm systems and other related building system products at customer sites.