... amplifier, silver electrode, headgear, clamp, software, HP color jet pr JY-2410 characteristic: * Dual isolation, insure security * Observe and record ... EEG simultaneously * 3D EEG and brain mapping * Self-contained management system of medical record * Two ECG leads and one breathing lead ... more than ±5% when added ±300mV direct current polarizing voltage JY-2410 Digital EEG System and Brain Mapping