ROBERTSON 3P20116 eBallast, Instant Start, NPF, 1 or 2 Lamp F32T8, 120Vac, 60 Hz, Model ISU232T8120 BA (Replaces Robertson 3P20003, Model ISU232T8120 /B) Equivalent to: Philips-Advance REL-2P32SC, REB2P32SC; General Electric GE-232-120-N; Universal B232I120RH-A, B232I120RESA; Osram QT2X32T8120ISNSC Equivalent to: Keystone KTEB-232LBF-1-TP-PIC-EV; Aspen VE232120HIP, VE232120MIP; Howard E2/32IS/120SC; Sola E-758-F-232-SC Parallel lamp connection, Encased and potted, Sound Rated A, Internal surge protection Meets FCC Part 18 (Class B) consumer limits, Meets ANSI standard C82.11 for ballast requirements, Meets ANSI C62.41 for transient protection Max case temp: 167F/75C, Max ambient temp: 104F/40C, Min starting temp: 0F/-18C, Lamp starts: &gt;15,000. Remote Mounting: 18 ft., Rugged steel case