Profile: GSN Greatecs GmbH & Co. KG. is a manufacturer of electronic components. We specialize in design, development and manufacture of switches, potentiometers, relays & optoelectronic components. Our toggle switches are a class of electrical switches that are manually actuated by a mechanical lever, handle or rocking mechanism. Toggle switches are available in many different styles and sizes, and are used in countless applications. We serve industries such as automotive, automation, POS terminals, broadcasting, communications and security industries.