Display: 45mm×25mm LCD display

FHR Performance
FHR Measuring Range: 50~240BPM (BPM: beat per minute)
Resolution: 1BPM
Accuracy: ±2BPM
Power consumption:<0.8W
Auto Shut-OFF: After 1 minute no signal, power off automatically.
Battery Type Recommended: Two pieces of 1.5 V DC battery (SIZE AA LR6).

Probe:
Nominal Frequency:        2.0MHz, 3Mhz, 4Mhz, 8Mhz
Working Frequency:        2.0MHz±10%
                                        P-: <0.5MPa
                                        I_ob: <10 mW/cm²
                                        I_spta: <50mW/cm²
Ultrasonic Output Intensity: Isata<5 mW/cm²
Ultrasonic Output Power:    P<10 mW

Working Mode: Continuous wave Doppler
Effective Radiating Area of Transducer: 157mm²±15%
Temperature:               +5℃～+40℃
Humidity:                      ≤80％
Atmospheric Pressure: 70 kPa～l06kPa

Transport and Storage:
Temperature: -10℃～+55℃
Humidity: ≤93％
Atmospheric Pressure: 50 kPa～l06kPa