Theon International Plc develops and manufactures customizable night vision, thermal imaging, and electro-optical ISR systems for military and security applications in Europe and internationally. Its principal products are night vision monoculars and binoculars; family of night vision sights; clip-on night sights; night driver's viewers; digital day and night cameras and upgrade kits for armoured vehicles; thermal stand-alone and clip-on uncooled sights; and vehicle and platform based thermal imaging systems. The company also offers optical and mechanical customized design, ILS, and maintenance services. The company was founded in 1997 and is based in Nicosia, Cyprus. Theon International Plc operates as a subsidiary of Venetus Limited.