Model SF40 Fetal Doppler is a low- cost and high performance fetal heart beat detector.
It can detect real-time FHR(Fetal Heart Rate) and average FHR.
It is applicable for the private obstetrician’s office, antepartum clinic, obstetrical department of hospital and remote monitoring situations, or using in home.
It has a large LCD screen display the FHR, and an audio output port connected with earphone or recorder with audio input.
It uses 9V battery standby for 3 months or continual used for 5 hours.

FEATURES
Lightweight and portable, Easy-to-use
Long life design, dust proof
Large backlight LCD display FHR
Built in Hi-Fi speaker, clear fetal heart beat sound
Accurate FHR detection, has real-time FHR mode and average FHR mode
High sensitivity interchangeable probe
Audio output port
Optional rechargeable battery and charger.

Technical specification
Work mode£º Continue wave ultrasonic Doppler
Frequency£º 2.0MHz¡À10%
Max ultrasound output£º £¼20mW
ISPTA £º£¼30mW/cm2
FHR range£º 60-210BPM£¨ time/minute£©
FHR resolution£º 1BPM
FHR accuracy£º ¡À1BPM
Display£º 45¡Á25mm LCD£¬3 bit FHR
Audio output£º 0.5W