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Defi-monitor/biphasic BR-DF02 ECG: ECG lead: Ⅰ,Ⅱ,Ⅲ, a VR, a VL, a VF, V1-V6 S-T segment analysis: –2.0-2.0mv Protection: withstand 4000v AV/50HZ voltage in isolation and work against electrosurgical ...