Doppler Fetal 2Mhz portable, rechargeable 4hrs Battery (widely used in hospitals)

FUNCTION : • Displays Foetal Heart Rate with LED • On-Off music function and sound alarm of the FHR when out of range • Automatic Turn off Function • For use from 12 weeks to full-term pregnancy FEATURES : • Aesthetically pleasing • Portable • Simple to operate • Alarm signal on irregular heartbeat • Volume control • Fast and accurate • Red LED display • Earphone Jack SPECIFICATIONS: •Overall Dimensions: 340mm (L) x 250mm (W) x 170mm (H) •Weight Net 1. : Gross 2.6kg •Power 14.4V rechargeable battery •Ultrasonic Frequency 2MHz 10% •Doppler frequency 0-8KHz •Input power ≤ 20VA •Output power ≤10mW/cm2 •Overall Sensitivity ≥ 90dB •Inside Audio output power ≥ 1.8W •Target velocity and display range 60-210bpm (±2pbm) •Coupling medium impedance 1.5-1.6 (105g/cm2.s) •Spatial-peak temp-peak acoustic pressure ≤ 0.1MPa •Effective area of transducer 3.0 ± 0.5cm2 •Adapter input voltage 230V AC •Battery 14.4V Ni-HM rechargeable battery •Continuous working time ≥ 4 hours •Environment temperature 10-40°C •Quality Standard CE