Specifications: Performance Display : 12"color TFT display to show 4~9 waveforms Resolution : 640x480 or 800x600 Interface : interface for CRT display and net card Tend observation : Tend chart of 1 - 72 hours Alarm : upper and lower limit alarm, audible and visual,third grade alarm Connection : Can be connected to central monitor and long-distance monitor Memory method : manual,alarm,timing,etc. Optional configuration : printer ECG Configuration : 3 or 5 lead Lead input : 5 lead: RA,LA,RL,LL,V Lead Selection : avR,avL,avF,V,MCL1 Gain : 4 grades optional Sweep speed : 3 grades optional Leakage of current : less than 3uA Safety : endurance of voltage of 4000VAC/50Hz, defibrillation protection and contra electrotome interface Indication for electrode cast: yes Work mode : diagnosis,monitor,and surgery Alarm indication : audible and visual, and can be reviewed ST segment monitor: yes,and alarm range can be set. Heart rate Measuring range : 25 to 250 bpm Accuracy : +/-2 bmp Tendency chart : 1~24 hours Refurbishing rate : once for each beat Alarm range : sustained adjustment of upper and lower limit between 20~250 Respiration Measuring range : 1~99 bmp Measuring error : +/-2bmp Measuring method : RA-LL Imp