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Silicon Laboratories Norway AS is a global provider of energy friendly microcontrollers and RF transceivers based on the ARM Cortex processor core. Consuming a quarter of the energy of competing products, the company's ultra low power EFM32 Gecko MCUs and EFR4 Draco radios target energy sensitive applications, including smart metering, building automation, security systems and portable heath and fitness equipment.

Silicon Laboratories Finland Oy provides short-range wireless connectivity solutions and software for the Internet of Things. It offers wireless modules, software stacks, development tools, and software development kits for applications in the industrial automation, consumer electronics, audio, automotive, retail, residential, health, and fitness markets. The company was founded by Tom Nordman and Hans Holmberg in 2000 and is headquartered in Espoo, Finland.

Telegesis (UK) Ltd. designs and manufactures ZigBee RF modules and firmware. It specializes in implementing ZigBee public profiles particularly ZigBee smart energy and ZigBee home automation. The firm serves the building lighting and control, renewable energy, other market sectors. The company was founded by Dennis Camper, John Bruce Chatt and Edmund John Leary in 1998 and is headquartered in London, the United Kingdom.

Silicon Laboratories UK Ltd. designs and develops analog-intensive and mixed-signal integrated circuits. The company is headquartered in Camberley, the United Kingdom.