Feature Super ability in against electrosurgical interference. Neither in cutting nor in burning, ECG waveform and HR can be influenced, very short recovering time after defibrillation, especially suitable for use in emergency or operating room. Unique thoracic impedance & nasal tube double model respiration test method (when patient can not lie quietly, only nasal tube respiration can detect the right respiration waveform and respiration rate). 15’’ color TFT LCD screen, High brightness,Wide viewing, 12 waveforms can be displayed on the same screen . lightness and volume are adjustable independently. Streamlined outline design with sense of the times & foldable handle. Multi-language interface selection: Chinese, English, Spanish, Portuguese, French, Arabic, Russian, Italian, Turkish, etc. Super ability in against electrosurgical interference. Neither in cutting nor in burning, ECG waveform and HR can be influenced, very short recovering time after defibrillation, especially suitable for use in emergency or operating room. ??? Unique thoracic impedance & nasal tube double model respiration test method (when patient can not lie quietly, only nasal tube respiration can detect the right respiration waveform and respiration rate). ???? User-friendly and man-machine dialogue interface with pop-up menus, dialogue boxes, rotary mouse and etc.