AXIS Door Switch A. I/O Module. Power Supply: Terminal Block. Intrusion door switch for connection to the camera's I/O port. Axis - a name you can trust. The world's first network camera was invented by Axis in 1996. The company continues to be a leader in the field of video surveillance. Axis Communications was founded in 1984 and is now represented globally with its own subsidiaries. Axis network video products are found everywhere: in public spaces such as retail, at airports, on trains and highways, in universities, in correctional facilities, in casinos, and in bank branches. The entire Axis value chain, from research and development to production and recycling, is characterized by the company's commitment to quality.