Contec Pocket Fetal Doppler Sonoline B with 2 MHz Probe

Main performance Anti-electroshock Type: Internally powered equipment Anti-electroshock Degree: Type B applied part LCD Display: 45 mm * 25 mm FHR Measuring Range: 50 BPM ~ 240 BPM (BPM: beat per minute) Resolution: 1 BPM Accuracy: 2 BPM Power Consumption: < 0.8 W Voltage: DC 3.0 V Power Supply:TWO 1.5V(AA size) alkaline battery Probe: Nominal Frequency: 2.0 MHz Working Frequency: 2.0 MHz 10% Overall Sensitivity : >100 dB Negative Peak Sound Pressure : < 0.5 MPa Ultrasonic Output Intensity: < 5 mW/cm2 Ultrasound Output Power: P < 10 mW Working Mode: Continuous wave doppler Effective Radiating Area of Transducer: 208 mm2 15%    Physical Characteristic 1. Dimension: (L)135 mm × (W) 95mm × (H ) 35 mm 2. Weight: About 180 g (including batteries)   Qualification 1. Passed FDA and CE  Accessories .2Mhz Waterproof probe. Built-in speaker Three work modes: Real-time FHR display mode, averaged FHR displaymode and manual mode LCD display Probe inspection Battery status indicator Backlight Auto Shut-Off : After 1 minute no signal, power off automatically Suitable Using Range: Suitable for use after the 12th week of pregnancy Two pieces of standard 1.5V alkaline battery available which can work no less than 10 hours Output for headphones The probe is changeable