Protection Class : 1 Usable on electronic or electromagnetic ballasts. Suitable for T5, T8 and compact lamps. Auto charge control suitable for charging of NiCd and NiMh. Can permanently monitor charge level of accumulators. Battey will auto discharge/recharge every 4 weeks. Maximum wire capacity from the unit to lamp is 200pF. For T5 35W/49W/80W, maximum wire capacity is 50pF. The unit and battery are sold separately. Battery choices of 6V 1Ah to 7Ah NiCd or NiMh. Automatic battery load control. Mounting hole distance is 225mm. Packing: Box of 17pcs / net weight 11kg Box size 365*240*210mm Certified: EN 55015 EN 61000-3-2 EN 61347 EN 61547 EN61047 EN 61000-3-3