Philips MASTER LED HPI lamps provide a simple solution with quick payback to replace HID alternatives in hall applications. MASTER LED HPI solutions offer the benefits of energy efficiency and the long lifespan of LED lighting, as well as a long service life with retrofit options. The design of the MASTER LED HPI allows for direct retrofitting of HID lamps without the need to replace the entire fixture or the installed ballast. The MASTER LED HPI lamp is compatible with ballasts for both 250 W and 400 W to maximize the feasibility of such retrofits. The intelligent ignition logic prevents ballast failure and continued ignition, which can lead to overheating and EMI risks. Multiple options for beam angle and a high color rendering index enhance light distribution in lighting applications for medium and high spaces while creating a comfortable, safe, and highly productive environment.