... mode: Automatic, Manual, Analysis. CE certified Vet Digital one channel ECG machine:Specification3.8’’LCD display 12 lead waveforms.3 operation ... and extendable to 150 cases in an optional SD cardSaved ECG waveforms replaying, printing or being transmitted to PC. Technical Specifications ... Paper: 63mm(width), 20m/30m(length), roll Power Supply: AC: 110/220V, 50/60Hz; 85V~265V(Option) DC: 12V, built-in ...