Sonotrax Basic A is a high performance model with FHR digital LCD back light display. The Sonotrax Basic A model has audio output, which can be connected with earphone or recorder. As well, you can operate the unit with 4MHz or 8MHz probe for vascular diagnose.

• Ergonomic design, compact and light
• Easy-to-use
• Large backlight LCD display
• Accurate FHR detection with clear sound
• High sensitivity interchangeable probe
• Support 2MHz, 3MHz, 4MHz, 8MHz waterproof probes
• Automatic and manual FHR counting
• Long time continuous use (about 8hrs)
• Automatic power-off
• Comes with 3MHC probe