... limit: 160,170,180,190 bpmLow limit: 90,100,110,120 bpmMaximum audio output power : 1.5 ... WattToco:Measurement range: 0~100 unitsMaternal SpO2 measure:Measure scope : 70%~99%.Measure accuracy ... store and playback the data.Power: a.c.100-240v, 50/60Hz or 16.8v Li-ION batteryPower ... life,Bacteriostat (not sterile). 3.1 Unpacking the units 3.1.1 Carefully remove the main unit and ...