... with thermal printer standard 12 leads digital three channel ECG machine BS-306BFEATURES3 channel ECG machine with measurementManual/Auto/Arrhythmia Analysis Modes80mm 3-ch recording with rhythm leadBuilt ... :25,50mm/s(±3%)Sensitivity:Auto,2.5,5,10,20,40mm/mVRecorder:High resolution thermal printer digital three channel ECG machine with 5.7 ...