Sonotrax Pro has backlight and audio playback. All these models have 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
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 8h)