Cheap small light fetal doppler for home use
Features:
Advanced autocorrelation algorithm for high FHR accuracy
High sensitivety wide beam integraded sensor for reliable
detection throughout pregnancy.
Active noise reduction crystal clear fetal heart sounds
Low ultrasound output dosage for ultimate safety
Advanced power management for long battery life
Elegant and compact design for easy home use
Specifications:
Fetal Heart Rate
Range:50-240bpm
Accuracy:±1% or 1bpm whichever is great.s great.s great.
Ultrasound
Frequency:2.5MHz continuous wave
Acoustive output:low power-exemption BS EN61157(Clause 6)
Output
Headset:100mW(32Ωstereo headset)
Audio Response:250Hz-1.25KHZ
Physical
Size:125*48*32mm
Weight:80g(including batteries)
Battery
2xAAA 1.5V Alkaline or 2x AAA 1.2V NiCad
Auto Shut off:1 minute no signal