Plessey Semiconductors Ltd. have signed a global exclusive license agreement to manufacture and sell PhytoLux Ltd.’s horticultural lighting solutions. Plessey's PhytoLux Attis-7 LED horticultural lights in use by a commercial strawberry grower near Colchester, England, for successful season extension. Courtesy of Plessey. Plessey has also taken on the operational, technical and commercial activities of PhytoLux, in what the companies call a collaboration to provide world-class LED plant growth lighting solutions. Plessey is a manufacturer of semiconductor products used in sensing, measurement and control applications. PhytoLux is a provider of LED light bulbs and lamps.