The range-topping quad-lamp PT-DZ21K2 Series - the industry's de facto choice for staging, events, and rental applications - guarantees spellbinding image quality and reliable, cost-efficient operation. Each feature-laden model in the series has advanced capabilities to satisfy the creative and logistical demands of professional users. DIGITAL LINK transmits uncompressed video, audio, and control commands through a single CAT 5e or higher STP cable for distances of up to 150 m (492 ft).