Sienna Ultimate PSG The EMS Polysomnography (PSG), hybrid LTM and Ambulatory EEG Amplifier The Sienna Ultimate PSG Recorder from EMS was developed using the latest technology. The hybrid LTM and Ambulatory amplifier has 32/64 unipolar or bipolar channels, integrated Lithium-Ion battery, 32 GByte Memory card, SaO2 and WiFi interface,..... read more