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Gestational weeks | No less than 12 weeks |
Working Temperature | 5 - 40 Deg.C / 41 - 104 Deg.F |
Storage / Transportation Temperature | -20 - 55 Deg.C / -4 - 131 Deg.F |
Working Humidity | 15 - 85 percent |
Storage / Transportation Humidity | 10 - 93 percent |
Atmospheric Pressure | 86 - 106kPa |
Integrative Sensitivity | Not Less than 90db |
FHR Measuring Range | 50 - 210 BPM ( BPM : beat per minute ) |
Accuracy | + / - 2 BPM |
Speaker Power | 0.5W |
Power | 2 AA Batteries ( not included ) |
Working Frequency | 2.125 - 2.875 MHZ |
Spatial-peak Temporal-peak Intensity | Less than 21.7kPa |
Ultrasonic Output Intensity | Less than 10mW |
Display type | Color LCD Display |
Pattern Type | Solid |
LCD Size | 1.8 inch |







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