(3 parameters) Venus B: FHR, UA, FM(4 parameters) Venus C: FHR1, FHR2, UA, FM(9 parameters) Venus D: FHR, UA, Maternal, NIBP, SpO2, PR, ECG, RESP, TEMPFeatures- 12.1 colour TFT highlight screen. - Reliable high sensitive 12-element pulse doppler transducer. Easy to capture signal. - Rotatable screen, suit to watch from different direction. - Built in high speed thermal printer, printing width could be 210mm, 150mm or 112mm. - 5 different style of operation screen, according to the choose of user- Optional function: Twins monitoring function, automatic fetal movements detection, AFM waveform displayable - Automatic monitoring mode, parameters configurable - Linux operation system, stable, easy to operate. - 48 hours monitoring data playback- Rechargeable Li-ion Battery- Built-in network capability, support wireless network