1 x28-33w 3hr 3Cell TC-DD Low Output Combo HF Ballast - Tridonic - 89899943 / 89899943
Tridonic 89899980 PC1X28-33LOEDD Emergency Combo for CFL
Combination electronic ballast and emergency lighting unit. For use with TC-DD compact fluorescent lamps. 3 hour rated duration, short circuit proof battery connection. NiCd batteries, separate battery pack with high temperature cells.