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EDAN SD3 Plus Ultrasonic Pocket Doppler

EDAN SD3 Plus Ultrasonic Pocket Doppler

Regular price $459.00
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The EDAN SD3 Plus is a compact, portable ultrasonic pocket Doppler that delivers exceptional performance at an excellent value. Featuring a bright 0.96‑inch OLED double color screen and a built‑in rechargeable Li‑ion battery providing up to 16 hours of continuous use, the SD3 Plus is designed for clinicians who need reliable, everyday fetal heart rate detection and vascular assessment in a pocket‑sized device.

With superb sensitivity, complete interchangeability, and high durability, the SD3 Plus supports interchangeable probes across 2 MHz, 3 MHz, 4 MHz, 5 MHz, and 8 MHz frequencies—making it equally suitable for obstetric auscultation and vascular blood flow detection. Its intuitive one‑hand operation, real‑time FHR display, and automatic power‑off functionality make it the ideal choice for routine clinical use in hospitals, clinics, and midwifery practices.


Key Features & Benefits

Bright OLED Display with Real‑Time FHR Monitoring

The SD3 Plus features a 0.96‑inch OLED double color screen that provides clear, real‑time FHR readings for easy viewing in any lighting condition. The bright display shows fetal heart rate values with 1 bpm resolution and ±2 bpm accuracy, allowing clinicians to quickly assess fetal well‑being at a glance.

Long‑Lasting Rechargeable Battery

Equipped with a 2600 mAh rechargeable Li‑ion battery, the SD3 Plus offers up to 16 hours of continuous working time on a single charge. The battery charges in approximately 6 hours, ensuring the device is ready when you need it. For added convenience, the unit is also compatible with normal AA batteries, providing flexible power options in any clinical setting.

Versatile Interchangeable Probes for Multiple Applications

The SD3 Plus supports a wide range of waterproof, interchangeable probes to meet diverse clinical needs:



Probe Application
2 MHz Deep penetration for later pregnancy and larger patients
3 MHz Detects fetal heartbeat as early as 9 weeks gestation
4 MHz / 5 MHz / 8 MHz Vascular diagnosis and blood flow detection

All probes are waterproof for easy cleaning and disinfection, and the plug‑and‑play design allows for quick probe changes without complex setup.

Compact, Ergonomic Design with Easy One‑Hand Operation

Weighing just 350 g (including battery) and measuring 168 mm × 31 mm × 67 mm, the SD3 Plus fits comfortably in your pocket and can be operated with one hand. The compact design makes it ideal for busy clinical settings where portability and ease of use are essential.

Automatic Power‑Off for Battery Conservation

The SD3 Plus features intelligent automatic power‑off functionality that conserves battery life. The device powers off automatically when the probe is returned to the rack (SD3 Plus & SD3 Pro models) or after 1 minute of no signal or operation, ensuring the battery lasts throughout your clinical day.

Built‑In Speaker with Adjustable Volume

The SD3 Plus includes a built‑in speaker with 2W audio output power for clear auscultation of fetal heart sounds. The adjustable volume allows clinicians to customize the audio level for different clinical environments, from quiet examination rooms to busy hospital wards.

Record & Playback Function

The SD3 Plus supports record and playback with audio playback and numeric display, allowing clinicians to review previously recorded heart sounds and share them with patients or colleagues for enhanced communication and documentation.

Unique Charger Stand Design

An optional charger stand is available for organized storage and convenient charging. This unique design keeps the device and probes neatly arranged and always ready for use.

Superior Sensitivity and Signal Quality

The SD3 Plus features enhanced processing technology providing a superior signal‑to‑noise ratio, ensuring clear, reliable audio output even in challenging clinical conditions. The 2 MHz and 3 MHz obstetrical probes offer an effective radiating area of 245 mm² (±15%), while vascular probes (4 MHz/5 MHz) provide 32 mm² (±15%) and the 8 MHz probe offers 14 mm² (±15%).


Technical Specifications



Specification Detail
Display 0.96‑inch OLED double color screen
Weight 350 g (including battery)
Dimensions 168 mm (D) × 31 mm (W) × 67 mm (H)
Operating Mode Continuous Wave (CW)
FHR Measurement Range 50 – 240 bpm
Resolution 1 bpm
Accuracy ±2 bpm
Audio Output Power 2 W
Battery Capacity 2600 mAh
Normal Working Time ≥16 hours
Charge Time ≤6 hours
Probe Cable Length 2 m

Probe Specifications



Parameter Obstetrical Probes (2/3 MHz) Vascular Probes (4/5 MHz) Vascular Probe (8 MHz)
Effective Radiating Area 245 mm² (±15%) 32 mm² (±15%) 14 mm² (±15%)
Ultrasound Output (Iob) <20 mW/cm²

Who Can Benefit from the EDAN SD3 Plus?



Specialty Application
Obstetrics & Gynecology Routine fetal heart rate monitoring, auscultation, and verification of fetal viability
Midwifery Intermittent auscultation during prenatal visits and labor
Vascular Medicine Assessment of peripheral vascular and arterial diseases
Primary Care Point‑of‑care fetal and vascular screening
Emergency Medicine Verification of fetal heart viability following patient trauma

Why Choose the EDAN SD3 Plus?



Consideration SD3 Plus Solution
Long working time Up to 16 hours on a single charge
Versatile applications Supports fetal, vascular, and blood flow detection with interchangeable probes
Early fetal detection 3 MHz probe detects heartbeat as early as 9 weeks
Clear visualization Bright OLED display with real‑time FHR values
Easy to use One‑hand operation with plug‑and‑play probes
Easy to clean Waterproof probes for simple disinfection
Battery flexibility Rechargeable Li‑ion or AA batteries
Value for money Exceptional performance at an excellent price

Package Includes

  • SD3 Plus doppler with OLED display

  • Detachable waterproof probe (choice of 2 MHz, 3 MHz, 4 MHz, 5 MHz, or 8 MHz)

  • AC recharger with Li‑ion battery

  • Carry case

  • User manual

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