High efficiency electronic ballast, Instant Start,Parallel Operation,High Power Factor,Sound Rated A * Internal surge protection,Inherent Thermal Protection,RoHS Compliant,No PCBs * Also offered as an individually packaged version by ordering our ROBERTSON 3P20019 ISA259T8MV /A * Three Year Factory Warranty-ONLY if the Amazon Seller is ROBERTSON WORLDWIDE. * Take advantage of ROBERTSON"s 60 years of electronic design and quality manufacturing experience