This Model (2500A) Includes Alarms. Features amber and red lights to indicate medium or high priority alarms. Choose the Nonin PalmSAT 2500 handheld pulse oximeter for accurate assessment of oxygen saturation (SpO2) and pulse rate. Compact and easy to use, the PalmSAT is suitable for portable monitoring regardless of patient location. All of Nonin PureSAT® sensors provide precise measurements even in the presence of motion, low perfusion, and other challenging conditions. Features & Benefits: