Variometers; Chargers for electric batteries; Current rectifiers; Electric light dimmers; Electric transformers; Inverters; Step down transformers; Time switches, automatic; Voltage surge protectors; Lighting ballasts

Inverters; Variometers; Chargers for electric batteries; Current rectifiers; Electric light dimmers; Electric transformers; Lighting ballasts; Step down transformers; Time switches, automatic; Voltage surge protectors