Includes 2 airway adapters (large & small). 1 year service warranty. For use with petMAP+ II and petMAP XM CO2 Range: ± .43% +8% of gas level @ 25° C 0-152 mmHg / 0-20% /0-20.3 kPa RR Accuracy: ± 1 breath RR Range: 0-150 breaths per minute