The EN 54-16 certified LDA ONE500 public address and voice alarm system ensures fast, safe and controlled emergency evacuation. ONE is the most versatile and cost effective voice and public address alarm system thanks to its innovative features, excellent audio quality and flexibility in the smallest space. It has 2 class D amplifiers, 6 zones, 3 audio inputs, 6x6 audio matrix, DSP and LCD display. The system can be configured without the need for software or a PC, thanks to its Plug & Set configuration mode for PA and VA. The audio and automatic mixing inputs provide great versatility for PA use in small installations. It incorporates EN 54-4 battery charger and works with a single 12V battery, minimizing the cost of system maintenance thanks to its advanced energy-saving control. The innovative Wall & Rack design allows for autonomous wall mounting or rack mounting.