• EDAN SD3 Ultrasonic Pocket Doppler with OLED display and interchangeable probes for fetal and vascular monitoring
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EDAN SD3 Ultrasonic Pocket Doppler

EDAN SD3 Ultrasonic Pocket Doppler

$349.00
$349.00
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The EDAN SD3 is a versatile, high-performance ultrasonic pocket Doppler designed for both fetal heart rate detection and vascular assessment. Offering exceptional performance at an excellent value, the SD3 series boasts superb sensitivity, complete interchangeability, and high durability. Its compact, lightweight design and intuitive operation make it the ideal choice for routine clinical use, whether you're an obstetrician, midwife, vascular specialist, or primary care physician.

This handheld device is available in multiple configurations to suit different clinical needs—from fetal heart rate monitoring as early as 9 weeks of gestation to assessing peripheral vascular and arterial diseases.

Key Features & Benefits

Versatile Applications – Fetal & Vascular

The SD3 is available in two primary configurations:



Model Application Probe Options
Fetal Doppler Routine fetal heart rate detection and auscultation 2 MHz (deep penetration for later pregnancy), 3 MHz (detects heartbeat as early as 9 weeks)
Vascular Doppler Assessment of peripheral vascular disease, venous and arterial conditions 4 MHz, 5 MHz, 8 MHz for assessing deep and superficial blood vessels

Superior Performance & Sensitivity

  • Excellent sensitivity – delivers clear, reliable signals for confident clinical decisions

  • Real‑time work mode – ideal for spot checks and daily monitoring

  • FHR Measurement Range: 50 – 240 bpm with 1 bpm resolution and ±2 bpm accuracy

  • High overall sensitivity – ≥90 dB for clear audio output

Bright OLED Display & Clear Audio

  • 0.96‑inch OLED double color screen – provides clear, real‑time FHR display for easy reading

  • Built‑in speaker with adjustable volume – clear audio output for auscultation

  • Optional headphone jack – for private listening in noisy environments

Plug‑and‑Play, Waterproof Interchangeable Probes

  • Waterproof probes – easy to clean and disinfect

  • Interchangeable design – quickly swap probes for different applications

  • Plug‑and‑play – no complex setup required

Flexible Power Options



Power Source Working Time Charge Time
3 AA alkaline batteries (LR6) ≥ 10 hours –
3 AA rechargeable NI‑MH (R6) ≥ 10 hours ~5 hours
Rechargeable Li‑ion battery (SD3 Plus/Pro) ≥ 16 hours ≤ 6 hours

  • Automatic power‑off – conserves battery life when no signal or operation is detected for 1 minute

  • Unique charger stand – available as an add‑on for convenient charging

Compact, Ergonomic Design

  • Main unit dimensions: 168 mm × 31 mm × 67 mm (6.61″ × 1.22″ × 2.64″)

  • Weight: Approx. 350 g (0.77 lbs) including battery

  • Compact design with easy one‑hand operation – ideal for busy clinical settings

Record & Playback Function (Select Models)

  • Audio playback and numeric display – allows review of previously recorded heart sounds

  • Available on SD3 and SD3 Plus models – enhances clinical documentation and patient communication

Carrying Case Included

  • Protective carrying case – keeps the device and probes organized and protected during transport

Technical Specifications



Specification Detail
Operating Mode Continuous Wave (CW)
FHR Measurement Range 50 – 240 bpm
Resolution 1 bpm
Accuracy ±2 bpm
Display 0.96‑inch OLED double color screen
Dimensions (Main Unit) 168 × 31 × 67 mm
Weight Approx. 350 g (including battery)
Probe Cable Length 2 m
Operating Temperature 0°C – 45°C (32°F – 113°F)

Fetal Probes (2 MHz / 3 MHz)



Specification 2 MHz Probe 3 MHz Probe
Application Deep penetration for later pregnancy Detects heartbeat as early as 9 weeks
Effective Radiating Area (245 ± 15%) mm² (245 ± 15%) mm²
Sensitivity – 9 weeks gestation
Ultrasound Output (Iob) < 20 mW/cm² < 20 mW/cm²

Vascular Probes (4 MHz / 5 MHz / 8 MHz)



Specification 4 MHz / 5 MHz Probes 8 MHz Probe
Application Deep and superficial blood vessel assessment Superficial blood vessel assessment
Effective Radiating Area (32 ± 15%) mm² (14 ± 15%) mm²
Ultrasound Output (Iob) < 25 mW/cm² < 25 mW/cm²

Who Can Benefit from the EDAN SD3?



Specialty Application
Obstetrics & Gynecology Routine fetal heart rate monitoring from 9 weeks gestation
Midwifery Intermittent auscultation during prenatal visits and labor
Vascular Medicine Assessment of peripheral vascular and arterial diseases
Primary Care Point‑of‑care vascular screening and fetal monitoring
Home Healthcare Patient self‑monitoring under healthcare provider guidance

Why Choose the EDAN SD3?



Consideration SD3 Solution
Need for both fetal and vascular monitoring One versatile platform with interchangeable probes
Early fetal heart detection 3 MHz probe detects heartbeat as early as 9 weeks
Clear visualization Bright OLED display with real‑time FHR values
Flexible power options AA batteries or rechargeable Li‑ion – choose what suits your workflow
Long working time Up to 16 hours on a single charge (Li‑ion model)
Easy to clean Waterproof probes for simple disinfection
Portable and lightweight 350 g – fits comfortably in your pocket
Value for money Exceptional performance at an excellent price
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