
Fetal Doppler Ultrasound Prenatal Baby Heartbeat Monitor
» Ultrasonic output power: 20mW
» Working Environment: Temperature: 5C 40C, humidity: 15-85%
» Atmospheric pressure: 86KPa 106KPa
» Storage and transportation
» Temperature: -20C 55C
» Humidity: less than or equal to 93% RH
» Atmospheric pressure: 86KPa - 106KPa
» Ultrasound frequency:
» 3MHz, with nominal sound operating frequency deviation of no more than 5%.