Pressure-Volume and Flow-Volume, displayed waveforms can be cycled instantly with a touch of a button 3.Standard integrated metallic modular respiratory circuit; completely solves the problem of gas sealing under high temperature disinfection, easy to clean and disinfect 4.Power Failure Support Functions: Automatically converts to backup power mode during AC power outages 5.Equipped with electronic pressure differential flow sensor, imported respiratory control valve, stable and reliable, rapid response time 6.High precision five tube flowmeter, fitted with interlocking oxygen-nitrous oxide supply, guarantees oxygen output is never lower than 21% 7.Nonhazardous environmentally friendly frame, precise construction, elegant design, equipped with automated self-checking function during startup and an automatic self-calibrating sensor 8.Alarms: Audible and/or visual alarms for tidal volume, airway pressure, oxygen concentration, asphyxia, power failure, oxygen failure and other alarms, also features a alarm query function 9.Vaporizer: Imported tank components assembled locally; Enflurane, Isoflurane and Sevoflurane (Halothane optional). Also possesses self-compensating functionality 10.Advanced and stable Adjustable Pressure Limiting (APL) valve, suitable for low and ultra low flow anesthesia 11.Equipped with advanced international rotating Na-lime tank, easy-operate, requires only one hand, and uses imported PPSU material and temperature resistant to 134�°C 12. Multi-parameter Patient Monitor: Optional