Matthias Ernst Rebellius

Siemens Industry, Inc. provides building controls, fire safety, energy and environmental solutions, and security system solutions. It offers electrical engineering services and manufactures electrical products. The firm also provides communication, transportation, and power generation systems and services. The firms divisions include building technologies, drive technologies, industry automation, industry solutions and mobility. The company was founded on July 5, 1994 and is headquartered in Buffalo Grove, IL.

Siemens Schweiz AG manufactures and markets automation, safety and security systems. It provides products and services for climate control, building & energy management, fire safety, security, lighting and facility management. The company makes HVAC control and automation products, such as actuators, thermostats, sensors and valves. Other products include fire safety (detection and evacuation systems) and security access controls (alarms, badge management and video surveillance). It also provides facility management services. The company distributes its products primarily through independent contractors and wholesalers. The company was founded in 1916 and is headquartered in Zurich, Switzerland.

Part of Siemens AG, Siemens WLL is a Qatari company that manufactures communications equipment. The private company is based in Doha, Qatar. Bernhard Fonseka has been the CEO of the company since 2012.

Siemens Pte Ltd. operates as global technology powerhouse that focuses on the areas of electrification, automation and digitalization. The firm's services include automation, building technologies, drive technology, energy, healthcare, mobility and financing. The company is headquartered in Singapore.

Siemens Ltd. engages in the electrical and electronics engineering sectors and operates in the industry, healthcare and energy sectors. The Energy segment offers products, services, and solutions for the generation and transmission of power; and the extraction, conversion, and transport of oil and gas. The Healthcare segment offers medical solutions such as medical imaging, in vitro diagnostics, interventional systems, and clinical information technology systems. The Industry segment offers products, services, and solutions that include industry automation, system integration and solutions for industrial plant businesses, as well as water processing systems. The company is headquartered in Riyadh, Saudi Arabia.