Hi, Ik heb een nieuwe doppler te koop. Als je interesse hebt, hoor ik het graag! Zie hieronder de beschrijving: Luister naar het hartje van uw ongeboren baby wanneer u dat wilt. Deze doppler is geproduceerd door CONTEC en voldoet aan alle veiligheidseisen. De Doppler is splinternieuw en wordt geleverd in een niet-commerciele groothandels-verpakking. Function: FHR Detection: Speaker output/Earphone output LCD display, Three working modes: - Real-time FHR Display mode, - Averaged FHR Display mode, - Manual mode, ADVANCED FEATURES: Battery energy status indication Built-in Speaker. Output for headphones. Low power inspection of the battery. The probe can be changeable. Probe Inspection. Backlight. Auto shut-off. Operates with 2 standard AA Batteries. Continuous operation time≥240min PACKAGE CONTENTS: 1x Sonotrax Pocket Fetal Doppler 1x Ultrasound Transmission Gel 1x Detailed User Manual Specifications: Operating Humidity: >80% Storage Humidity: >93% Operating Temperature: +5° to 40°C Storage Temperature: -10° to 55°C FHR Performance: FHR Measuring Range: 50~210 Beat per minute. Resolution: 1 BPM Accuracy: ± 3 BPM Atmospheric Preasure: 86 kPa~106 kPa Backlight: Two status that can be alternated. Display: 45 x 25mm LCD Display Audio Output Power: 0.5W Probe Nominal Frequency: 2.0 MHz Probe Working Frequency: 2.0 MHz ±10% Working Mode: Continuous Wave Doppler Effective Radiating Area of Transducer: 245mm² ±15% Size Length: 135mm Width: 95mm