... Main Unit 1Pc * Adult Finger SpO2 Sensor 1Pc * AC Power Adaptor 1Pc * Communication Cable 1Pc * The Operator’s Manual 1Pc ... ,PLETH,Pulse strength,TEMP(Optional)Signal sockets:SpO2 socket,PR socket,TEMP socket(Optional),adaptor socket,PC communication socketDisplay screen: Type: 128×64 ... 3. Electrical SpecificationsWorking Voltage: DC 6.0V~9.0VAC power adaptor Input: AC 100~240V, 50/60Hz, 0.7AOutput: DC ...