The 920M Plus and 2500A handheld pulse oximeter provides on-the-spot oximetry readings, and are designed to be easy to use for both healthcare professionals and patients. They feature a bigger display, better performance and a 72-hour memory. The soft, rubberized cover slides away for easy access to batteries, and may be used with a wide variety of finger and ear sensors for adult, infant and neonatal patients

Accuracy: SpO2 (+/-1 Standard Deviation) 70-100% +/- 2 digits for adults using Finger Clip Sensors70-100% +/- 3 digits for adults using Flex, Flexi-Form, or Reflectance Sensors 70-100% +/- 4 digits using Ear Clip Sensors70-95% +/- 3 digits for neonates using Infant or Neonatal Sensors
Pulse Rate +/- 3 +/- 1 digit

Indicators: Pulse Quality LED, tri-color
Numeric Displays 3-digit 7-segment LEDs, red
Low Battery LED, yellow

Temperature: Operating -20 to +50 degrees C (-4 to +122 degrees F)
Storage/Transportation -30 to +50 degrees C (-22 to +122 degrees F)

Humidity: Operating 10 to 90% non-condensing
Storage/Transportation 10 to 95% non-condensing

Altitude: Operating Altitude Up to 12,000 meters (40,000 feet)
Hyperbaric Pressure Up to 4 atmospheres

Power Options: Four 1.5V AA size alkaline batteries (100 hours typical operation) NIMH rechargeable battery pack (45 hours typical operation) AC power (charging stand)

Memory Capacity: 72 hours

Dimensions: 13.8 x 7.0 x 3.2 cm (5.4 x 2.8 x 1.3 in)

Weight: 210 g (7.4 oz) with alkaline batteries230 g (8.1 oz) with NIMH rechargeable battery pack

Warranty: 3 years

Manufacturer:  Respironics

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