Electrical

**SPECIAL ORDER** The design of safety signs for products has been influenced for many years by standards originally developed for accident prevention signs to be used in the general environment. As product safety signs evolved, some basic differences developed between their characteristics and those of environmental safety signs: Environmental safety signs are usually larger, observed at longer distances, and frequently contain lesser amounts of information for visual clarity at a distance. Product safety signs are likely to contain more information within a smaller format, are usually observed at closer distances, and must physically and visually integrate with a wide range of product size, shape, and color characteristics. Attempts by product manufacturers to address these variable characteristics have produced numerous approaches to the graphic treatment of such signs.

his third edition of CCTV: From Light to Pixels, a high-level professional reference, has been expanded to cover all video compression techniques used in the ever-increasing assortment of digital video recorders (DVRs) available on the market today. In addition to demystifying DVR technology, the third edition also clarifies the technology of data networking and explains various compression techniques. Additionally the book retains the essentials that made the previous editions convenient and valuable including details of CCD cameras, lenses, coaxial cables, fiber-optics, and system design. This book is beautifully illustrated with dozens of photographs, tables, checklists, charts, diagrams, and instructions.