The Tridonic EM 04 ST G2 (selftest) is one of the latest emergency inverters on the market. Designed to be used with linear and compact fluorescent lamps 16-26w with a 4 cell NiCad battery. Can be used with non dimmable and dimmable setups. See link for all product features Tridonic EM 04 SELFTEST G2 (NiCad) Manufacturer part number 89800201