Technical parameters:
Display screen: 25mm×15mm
Ultrasound frequency:3.0MHz
Output intensity of ultrasound:<10Mw/cm2
scope of  FHR measurement and display:40--220bpm
Accuracy of FHR Measurement:1bpm
Power of Voice Output:1W
Ranges of Voice Output Frequency:500dB--3000 dB
Working temperature:0--40
Relative humidity:30%--80%
Scope of Atmospheric pressure:70kPa--106kPa
Power Supply: 9.6VNiMH rechargeable batteries
Input range of adapter: AC100V240V,50/60Hz
Continuous working time:>4 hours

Dear customer, 

We ,Xi’an Yima Opto-electrical Technology Com.,Ltd. is an integrated economic entity of R&D,manufacturing and trading with over 20 years of history . 

Our business scope covers various fields such as biochemical analysis,environmental protection,industrial testing, bioscience,medical apparatus and instruments,internet technology and some frontier science. 

Through a long-time development,we own a national resources system of various professional talents , abundant supply for various components &parts and special materials, full producing &processing equipments , strong Technological standardization and a complete quality assurance system. 

If you need OEM or ODM in manufacturing ,scientific research , market development and or you want to build your own brand in your country, it’s our honor to cooperate with you.In this way ,we have developed many products for our customers from the USA, Europe and South Africa and got good feedback on Alibaba 

We firmly believe that science and technology is no boundaries

Our mission is to make every effort to contribute to all humanity.