For its pulse oximetry , the Model 9402 utilizes Nellcor™ Oximax™ digital processing along with the blood pressure advantages of Model 9401. Even for difficult to monitor patients with motion or low perfusion, greater accuracy than conventional oximetry is offered by The OxiMax technology. A lingual sensor is included, Provides diastolic, systolic, mean arterial pressure and heart rate in seconds. For superior performance under low perfusion and patient motion conditions, Nellcor SpO2 all-digital Oximax technology is used. For easy diagnosis of Pulse rate ranging from 20 to 300 beats /min the screening mode automatically calculates averages after 5 readings. For readings automatic and manual mode is offered. It sets auto measurement from 1- 90 minutes. The product has AC or rechargeable battery that can easily last for up to 4 hours and works on 100 volt to 240 volt. Last 5 hours reading or 99 minutes of reading can be stored easily. For all parameters high and low alarm is available. System alarms and troubleshooting messages are displayed by message window. 13 cuffs in 7 different sizes are presented.