EDAN Sonotrax Basic A Ultrasonic Pocket Doppler

The EDAN Sonotrax Basic A is a high‑performance, cost‑effective ultrasonic pocket Doppler designed for healthcare professionals who need reliable fetal heart rate monitoring and vascular assessment in a compact, portable device. As part of EDAN's trusted Sonotrax series, this versatile instrument features an FHR digital LCD backlight display, interchangeable waterproof probes, and three heart rate processing modes—making it an ideal solution for obstetric clinics, midwifery practices, and vascular screening applications.

With its ergonomic, lightweight design and long battery life, the Sonotrax Basic A delivers accurate fetal heart detection from as early as 10‑12 weeks of pregnancy, while also supporting vascular diagnosis with compatible probes. Whether you are a doctor, midwife, or ultrasound technician, this pocket Doppler offers a reliable and efficient tool for routine clinical use.

Key Features & Benefits

Versatile Clinical Applications – Fetal & Vascular

The Sonotrax Basic A supports a wide range of waterproof, interchangeable probes, making it suitable for both obstetric and vascular applications:

The 3 MHz probe can detect fetal heartbeats as early as 10‑12 weeks of gestation.

Three FHR Processing Modes for Flexible Use

The Sonotrax Basic A offers three heart rate processing modes to suit different clinical preferences:

• Real‑time mode – displays live fetal heart rate as it is detected

• Averaged mode – displays a calculated average FHR for stable readings

• Manual mode – allows manual counting of heartbeats

Bright Backlit LCD Display

The device features a large backlit LCD screen that clearly displays FHR values, probe type, and battery level. The backlight ensures easy reading even in low‑light clinical environments, reducing eye strain during long shifts.

Accurate FHR Detection with Clear Sound

The Sonotrax Basic A delivers accurate FHR detection with high‑fidelity sound quality. The clear audio output allows clinicians to listen to fetal heart sounds with confidence, supporting accurate diagnosis and patient reassurance.

Interchangeable Waterproof Probes

All probes are waterproof and interchangeable, allowing for easy cleaning, disinfection, and quick changes between different clinical applications. This design enhances infection control and workflow efficiency in busy clinical settings.

Long Battery Life and Automatic Power‑Off

• Built‑in rechargeable battery – provides approximately 8 hours of continuous use (some sources indicate up to 4‑6 hours of continuous operation)

• Automatic power‑off – conserves battery life by shutting down when not in use

Audio Output for Recording and Private Listening

The Sonotrax Basic A includes an audio output that can be connected to earphones or external recorders. This feature enables private listening in noisy environments and allows clinicians to record fetal heart sounds for documentation or patient sharing.

Ergonomic, Compact, and Lightweight Design

Weighing just a few ounces and featuring a compact form factor, the Sonotrax Basic A fits comfortably in a pocket and can be operated with one hand. Its ergonomic design reduces hand fatigue during extended use, making it ideal for busy clinical schedules.

High Sensitivity and Clear Sound

The device incorporates high‑sensitivity interchangeable probes that deliver clear, reliable signals. Users consistently praise the Sonotrax Basic A for its "very clear sound" and ease of use.

Technical Specifications

Who Can Benefit from the EDAN Sonotrax Basic A?

Why Choose the EDAN Sonotrax Basic A?