S8800 N2O sedation system provides a new sedation solution which is widely used for analgesic for clinical labor and delivery,induced abortion in department of gynaecology and obstetrlcs,endoscopic examinnation in internal medicine department. Features 1.Patent technology?more effective and safe; 2.More optional ventilation modes for various clinical needs; 3.Electronic mixture gas controlling system for more accurate adjustment; 4.Built-in long life concentration monitoring system for real time monitoring of inhaling gas; 5.Built-in pressure monitoring system for real time monitoring of airway pressure; 6.Screen with display of setting parameters, monitoring parameters, alarm information and waveform; 7.Optional new style of Nasal Pillows or face mask for easy operation; 8.Optional Gas scavenging system to prevent the environment from pollution; 9.Back up battery for 120 minutes when main power fails.