Spec Sheet Preview: The Alpha Communications® RSN7050 (single sided) and RSN7050D (double sided) Lighted Area of Refuge Signs are used with the AlphaRefuge™ 2100 and 2400 Series Area of Refuge systems, and can be used with other manufacturer's ARA systems. The RSN7050 Series signs are powered by 120/277VAC and have built-in battery back-up and LED Lights, to comply with the current building codes. Typically, one RSN7050 Series sign would be placed at each "Area of Refuge" location, to identify that location for building visitors and residents, for ARA code compliance.