maternal fetal monitor,baby monitor,multi-parameter monitor,12.1 inch screen Technical DateL8P fetal/maternal monitorFetal Heart Rate:Transducer: Multi-crystals, pulsed doppler , high sensitively Strength: <5mW/cm2Working frequency: 1.0MHzSignal processing: special DSP system and modern recognization.Measurement range: 50~210 bpmAlarm Range:High limit: 160,170,180,190 bpmLow limit: 90,100,110,120 ...