Model 340 is intended for continuous pulse oximetry and has visual and audible alarms to aid with patient monitoring. Features: Portable: Small pulse oximeter with adjustable alarms & LED display Alarms: Provides audio & visual monitoring of the saturation (%SpO2) and pulse rate (BPM) Audible Signals: The audible pulse tone is adjustable & varies in pitch based on changing oxygen saturation readings Connections: Analog/serial output allows information be connected directly to other monitoring diagnostic equipment Power: Runs continuously for 12 hours on NiCad batteries or can be powered with the provided AC/DC adapter Warranty: The Mediaid Inc. limited warranty covers five years Veterinary Lingual Clip: The reusable lingual oximetry sensor is suitable for all dogs & cats & some large animals Veterinary Rectal with Thermistor: This oximetry sensor is suitable for both large & small animals A thermistor provides a body temperature reading which is displayed intermittently or on demand in either Celsius or Farenheit