WDH-1(A) ventilator Mode and display and operation method: Mode: A/C, A/C+SIGH,SIMV,SIMV+PSV,PCV,PSV, MANUAL ,PEEP,CPAP, Display: 10.4 TFT color screen Operation method: knob operation and touch key Technical parameter: Ventilation wave type: squire wave, deceleration wave Tidal volume: 501500ml Breath frequency: 260 BPM I :E ratio: 3:1 1:3 Inspiration time: 0.23S Inspiration plateau: 050 PEEP: 02.0 KPa Trigger sensitivity: -0.1-2.0 KPa, OFF Oxygen concentration: 45100 PSV pressure: 03.5 KPa Monitor wave and parameters: Monitor wave: P-t, V-t Tidal volume Breath frequency I:E ratio PEEP Ppeak MV Oxygen concentration Pmean Alarm parameters and alarm setting Tidal volume upper limit: 1002000 ml Tidal volume lower limit: 202000 ml Breath frequency upper limit: 5100bpm Breath frequency lower limit: 2 60BPM Peak pressure upper limit: 0.57.0KPa Peak pressure lower limit: 03.0 KPa PEEP upper limit: 0.5 3.0KPa PEEP lower limit: 0 2.0KPa Oxygen concentration upper limit: 30100 Oxygen concentration lower limit: 2160 MV upper limit: 4.0 40L/min MV lower limit: 0.5 20L/min Apnea alarm and setting: 3 12 S Battery low alarm: DC11.5VOther function: Build-in battery