Technical SpecificationsLead: Standard 12 leadInput Circuit: Isolated: Protection against pace making and defibrillationInput Impedance: more than 50M㊣nput Circuit Current: less than 50nACalibrating Voltage: 1mV +/- 3%Skin Voltage Tolerance: +/- 300mVSensitivity: 5,10,20mm/mVFilter: AC: 50Hz(-20dB); EMG:35~45Hz(-3dB)Paper Speed: 25,50mm/s +/- 3%Time Constant:more than 3.2s(0,+20%)Noise Level: less than 15糣p-pFrequency Response: 0.05~150Hz(-3dB)CMRR: more than 100dBSampling Rate: 1.25msA/D Converter: 12 bitsRecording Paper: Roll paper 63mmx20m(30m)Operation Mode: AUTO/MANPrinter: Thermal array printerBaseline Control: Automatic positionRhythm Lead: Standard 12 leadLead Change: Automatic/ManualExternal Signal: 10mm/mV +/-5%; Single ended more than 100K 〦CG Output:0.5V/mV +/- 5%; Single ended less than 100㏒afety Level: Class I Type CFPower Requirements: AC: 220V, 50 Hz/110v,60HzDC: Built in rechargeable battery Supporting 50 exams after complete chargingPackage: 640x400x530mm(4 sets); 240x310x370mm(1 set)Weight: 3.5KgStandard Accessory: Patient Cable: 1pcLimb Electrode: 4pcs/setChest Electrodes: 6pcs/setPower Cable: 1pcGrounding Cable: 1pcPaper Shaft: 1pcRecording Paper: 1 rollFuse: 3pcsBuilt in Battery: 1pcOperation Manual: 1 copy producing area:China payment:T/T or L/C