The principle behind solar anti-theft lights involves several critical components. Solar energy harnessing, 2. . The anti-theft system for photovoltaic panels SOLAR DEFENDER Solar Defender: the systems Solar Defender at Optical Sensors Solar Defender is based on a system of addressedoptical sensorsapplieddirectly on the panelto be alarmed. (The sensors are addressed by a special programm ing devices) When. . LiteSUN/LiteSUN PLUS for the protection of each individual panel, in any type of photovoltaic system (from small rooftop installations to large solar parks). For over 15 years, plastic optical fiber technology has been successfully used to prevent the theft of solar panels in systems of any size. . This article looks at six ways how to protect solar panels from theft, from locking fasteners to advanced CCTV systems. At worst, it. . Fortunately, there are several practical strategies you can use to deter theft and improve security. Motion detection technology, 3.