BT-350E LED has the same functions as LCD type except having large 7-segment LED showing all the setting parameters and not having trend mode.
It has also a event marker enabling a pregnant woman in the bed to indicate fetal movement point by pushing the button herself when she feels fetal movement.
BT-350E indicates FHR as numeral by irradiating ultrasound at the abdomen, abstracting doopler frequency of heart beat cycle from the signals reflected from fetal heart, and outputting FHR change as sound, and analyzing these signals. Besides, you can measure UC by using pressure sensor.
BT-350E prints FHR, UC, and FM on the thermal paper and displays them on the LCD display.
Especially, the doppler probe has 9 crystal sensers for catching FHR effectively, and it is water-proof type. BT-350 has 2 kinds of installation functions such as notebook, and wall mount.