Electro Optic Systems Holdings Limited is an Australia-based company engaged in the space and defense system business. The Company's segments include Space and Defence Systems. Space segment includes laser-based space surveillance systems and also manufactures and sells telescopes and dome enclosures for space projects. Defence Systems segment develops, manufactures and markets fire control, surveillance and weapon systems military customers. The Company has developed space tracking sensors. The Company, through its subsidiary, offers observatories, telescopes, space surveillance products, detector systems and laser products. The Company's product range includes EOS R-400 and EOS R-600. It offers repair services and sensor units for military and security application.