Photon Control Inc. designs, manufactures, and distributes a range of optical sensors and systems to measure temperature and position. The company offers fiber optic temperature probes that measure temperature in harsh environments. It also provides single channel and multi-channel temperature sensing products. In addition, the company custom designs, develops, and manufactures optical position and displacement sensors. Further, it offers custom design, installation, training, and support services. Photon Control Inc. serves wafer fabrication equipment manufacturers and end users in the semiconductor and related industries in the United States and Asia. The company was formerly known as Coldswitch Technologies Inc. and changed its name to Photon Control Inc. in 2002. Photon Control Inc. was founded in 1988 and is headquartered in Richmond, Canada.