Simply Doppler...

With full multipoint digital autocorrelation, the fetal heart detection it provides is accurate and reliable, with the display of fetal heart rate on a large, easy to read LCD display. Simple to operate, the DD250 is designed with a minimum number of controls. Just one control to turn the unit on / off and to adjust the volume. The fetatrack® DD250 offers continuous fetal and vascular doppler in the small clinic, hospital or doctors office. Weighing under 2Kg, the fetatrack® DD250 is a truly portable unit. It will operate from a mains supply or for over 30 hours from its built in rechargeable...

Frequency Transducer Audio Range Power output Indicators Heart Rate Processing Data Presentation Power Supply Display Control Indicators AC input voltage Frequency Power Battery charge life Battery charge time Enclosure Safety Computer interface 2 MHz continuous wave (3MHz , 5MHz or 8MHz option) 2 crystal narrow beam Response 300 to 1KHz ( 4KHz with vascular) 50 to 210 bpm <10m W/cm2 LCD heart rate and pulse indication Digital multipoint autocorrelator Alpha numeric LCD display, FHR and battery low indicator. Volume control and power on / off Green mains power on / off, Yellow battery charge....