... ECG,RESP,SPO2,SEMG,EOG Types & Features Product DescriptionType D EEG/ERP/PSG System (Fiber optical transmission) -- with ERP/PSG ... , data transmission bandwidth of fiber optical is better than ordinary cable, therefore, it can deliver high-speed, stable and safe ... Fully battery power Operated. Offering the highest signal quality. This EEG/ERP/PSG System is designed to eliminate virtually all noise ...