what is normal fetal heart rate

{"cid":"91185359","title":"Fetal Heartbeat Detector Medical Ultrasound Equipment For Heart Rate Monitoring","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/94\/70\/b4d2b2e7aa9f88c7ac18eab2e7ac-200x200-1.jpg","attrs":{"Price":"The price is negotiable","Brand Name":"GOLGATHA","Model Number":"GGT - 3021","Minimum Order Quantity":"1","Delivery Time":"1-30 work days","Certification":"CE and ISO","Place of Origin":"Guangzhou China","Payment Terms":"T\/T","Supply Ability":"1-10000 PCS per month","Packaging Details":"Conventional packing","LCD Display":"29*12mm","Continuous Work Time":"More Than 8 Hours","Feature":"Fetal Heartbeat Detector","Ultrasonic Frequency":"2.5 MHz","Origin":"China Guangdong"}}

{"cid":"91208125","title":"Ultrasonic Obstetrics And Gynecology Equipment Fetal Monitor CTG Machine Fetal Doppler","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/f2\/b3\/393eef93a183f2ce460de80baa0a-200x200-1.jpg","attrs":{"Price":"$8.80 - $18.80\/Units","Brand Name":"SUCE","Model Number":"JB15","Minimum Order Quantity":"100PCS","Delivery Time":"about 5 days","Place of Origin":"Guangdong, China","Packaging Details":"Standard shipping package","Supply Ability":"5000 Unit\/Units per Month","Certification":"CE,ISO13485","Payment Terms":"T\/T, Western Union,Payoneer","Power Source":"Electric","Warranty":"1 Year","After-sale Service":"Online technical support","Material":"Plastic","Shelf Life":"2 years","Quality Certification":"ce","Instrument classification":"Class II","Safety standard":"None","Item Name":"Fetal Doppler","Properties":"Fetal Monitoring Equipments & Accessories","Function":"Detect FHR on the abdomens of pregnant women","Power":"DC3V[2*AA]Alkaline\/rechargeable batteries","Operation":"Easy","Display":"45mmx25mm","Frequency":"3.0MHZ","Ultrasonic Output Capacity":"<20mw","Weight":"500g (including batteries)","Dimension":"29mm x 91mm x 34mm"}}

{"cid":"91199444","title":"Edan F6 Fetal Monitor For Repair Used Refurbished White Color Medical Equipment Medical Device","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/d1\/f9\/db3efa4a16433aa68a0192dbeb1e-200x200-1.jpg","attrs":{"Price":"USD","Brand Name":"Edan","Model Number":"F6","Minimum Order Quantity":"1 Piece","Delivery Time":"3-5 working days","Payment Terms":"T\/T, Western Union, Paypal","Brand:":"Edan","Product Name:":"Fetal Monitor","Model:":"F6","Product Type:":"Whole Machine","Condition:":"Used-Good","Application:":"Hospital, etc","Serve:":"Direct Sales, Exchanges, Repairs","Warranty:":"90 Days","MOQ:":"1 Piece","PAYMENT TERMS:":"Pay In Full Before Shipment"}}