Super Fetal Monitor JPD-300A Functions and Features: Probe: Solid and durable, anti-shock and anti-throw. Innovative: Special Ultrasound emit method, conquered pulse and the defect of continuing wave. Multi-fetus: Single fetus, twin fetus, tri-fetus monitoring are optional. Patent: Special fetus awaking function within the FHR probe. Multi-parameter: Real-time monitor Maternal SPO2 and NIBP. Terseness：Special design of ?Y? connection of FHR, TOCO, Fetal Movement probe, terse and won?t twist. Tone: Adopt original ?Sonyo? speaker, make the sound of fetus? heart beat more clearly and loud. Interact: When connect with the system, can operate mutually with center monitor, make the operation more convenient. Main Technical Specification: Ultrasound 换能器：Multi wafer, wide wave-beam. Ultrasound frequency: 0.8-2.2MHz ±5% Ultrasound intensity: ＜5mW/cm2 TOCO transducer: external transducer FHR range: 30-210bpm TOCO range: 0-100 (relative unit) Power: AC 220V50Hz Paper: 112mm thermal Weight: 3.65KG Size: 340mm?310mm?125mm Working condition: Temperature 10°C-45°C Humidity 10-80%