Cardiac Direct


Cordless Fetal Doppler


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ES-101EX-2 EchoSounder


  • Cost effective Built-in 2.25 MHz transducer - no separate probe to connect
  • Large, easy-to-read FHR display - HR displayed is based on 4-beat average
  • Compact & battery operated

The ES-101EX-2 EchoSounder® is a convenient 2 MHz fetal Doppler with built-in transducer and easy to read fetal heart rate display. This unique Doppler is the size of a cell phone. Slip it conveniently into a pocket.

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Technical Specifications:

  • Power: DC 3V, 2 AA alkaline batteries
  • Consumption: Approx. 90 mA with no signal input
  • Battery life: 5 hours or more with max. sound volume
  • Transducer: 20 mm DIAM
  • Transducer frequency: 2.25 MHz
  • Method: Pulsed wave, repetition rate of approx. 4.3 kHz
  • Oscillation Output: 8V p-p or less
  • Freq. Characteristics: 230 Hz +/- 50 Hz to 800 +/- 150 Hz, -6dB
  • Max. speaker output: Impedance: 64 ohms, max. output: approx. 125 mW
  • Speaker: 45 mm DIAM
  • Headset: Cuts off speaker
  • LCD dimensions: Display area: H 10 mm x W 30 mm
  • LCD display: 3 digits, 7 segments each, heart beat mark, low attery, sound volume level
  • Heart rate range: 60 to 240 BPM +/- 3%
  • Buttons: Power/Freeze power ON/OFF
    Pressing longer than 2 sec. turns the unit OFF
    Freeze ON/OFF by pressing less than 2 sec.
    Volume control: Press to switch from low to high volume; press longer than 2 sec. to show battery level
  • Dimensions: approx. 140 (H) x 45 (W) x 30 (D) mm
  • Weight: 220 grams or less including battery
  • Accessories: Included: ultrasonic gel, batteries (2), strap, carry pouch with belt clip
    Optional: headset

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