Tested according to IEC 61439-3 Number of phases: 1 phase - 3 phase Number of electrical feeders [X+Y] where: X: Number of service feeders (before the contactor) Y: Number of controllable feeders (after the contactor) Feeder options for 1-phase distribution board: [2+2] / . Tested according to IEC 61439-3 Number of phases: 1 phase - 3 phase Number of electrical feeders [X+Y] where: X: Number of service feeders (before the contactor) Y: Number of controllable feeders (after the contactor) Feeder options for 1-phase distribution board: [2+2] / . Today, most hotels use high-tech hotel key cards which allow guests easy, secure access to their rooms and avoid excess energy consumption when the guests are not in the room. alfanar introduces the Hotel Room DB system that maximizes guest comfort and convenience, and provides hotel operators a. Sensors optimise energy performance by controlling power to the lighting, heating, ventilation, air-conditioning (HVAC) equipment, general-purpose outlets (GPOs) and other electrical services as required. Economy and midscale hotels especially benefit from a cost- and feature-appropriate controls. Picture this: a 5-star hotel in the heart of Riyadh, where guests glide through marble lobbies, elevators whisper between floors, and conference rooms hum with the energy of global meetings. Behind every seamless experience—every lit chandelier, every functional air conditioner, every charging port. Thanks to the flexible electrical infrastructure we help you create; hotels can offer their guests a memorable experience and make them feel truly at home. This leads to increased customer loyalty and greater return on investment. We drive this through innovation at all levels - from. Our comprehensive system solutions for the electrical installation of hotel buildings support reliable energy distribution, intelligent room automation, suitable lighting and effective sun protection. At the same time, we offer building owners maximum cost-effectiveness, electrical planners. Fujian Guozhiyun Information Technology Co.