This item is NEW and comes with a 3 year manufacturers warranty.
Sonotrax Lite is for simple auscultation (intermittent listening). Sonotrax Basic is a high performance model with FHR digital LCD display. 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)
Display: 45mm x 25mm LCD display
Heart Rate Range: 50-210bpm
Recording Time: 240s
Audio Output Power: 0.5W
Auto Power-off: 1 minute with no signal or operation