The Sensor Switch MP20 Power Pack is designed for 120-277V operation and supplies 15 to 24 VDC current to up to (14) low voltage sensors or (8) sensors with a relay. Sensor Switch has always been a reliable manufacturer and if their products were ARRA qualified they would receive even more business. It is difficult to understand why Acuity Brands, the parent company of Sensor Switch, would not make ARRA listing a priority for the Sensor Switch brand.