1700m s digital echo sounder

{"cid":"91222737","title":"Boat Ultrasonic Depth Hand Held Echo Sounder For Fishing Underwater Measurement","imgUrl":"https:\/\/img.ismap.com\/nimg\/13\/da\/93000e9e4a3ce664c8914d4f07b6-200x200-1.jpg","attrs":{"Price":"$4200,00","Brand Name":"SOUTH","Model Number":"SDE-28S+","Minimum Order Quantity":"1 piece","Delivery Time":"30 work day","Payment Terms":"T\/T, L\/C","Supply Ability":"1 ~ 30 day","Product name":"Echo Sounder South SDE-28S+","Frequency":"200KHz","Speed range":"1300 - 1700m\/s","Measuring Ability":"0.3 - 300 m","Warranty":"1 year","Place of Origin":"China","Accuracy":"1X1X1 cm","Drat":"0 - 9.9 m"}}

{"cid":"91197283","title":"China Made HD-570 Metal Enclosure 280m 2GB Single Beam Echo Sounder High-pixel Full-metal Enclosure Cost Effective","imgUrl":"https:\/\/img.ismap.com\/nimg\/b1\/2c\/74205f711c7db478f5efec177411-200x200-1.jpg","attrs":{"Brand Name":"THUNDSEA","Model Number":"HD-570","Minimum Order Quantity":"one set","Delivery Time":"15 Days","Certification":"CCS","Place of Origin":"Qingdao","Payment Terms":"L\/C, T\/T","Supply Ability":"30 set per month","Packaging Details":"carton box","Working frequency":"200kHz","Maximum transmit power":"800W","Range":"0.15m~280m","Accuracy":"\u00b110mm\uff0b0.1%h,resolving power 25px","Draft range":"0~15m","Sound Speed Range":"1370~1700m\/s,resolving power 1m\/s","CPU":"1.92GHz,dual core(Win7 system)","Memory":"2GB","Maximum rate of water depth sampling":"30Hz","Hard disk":"32G Solid State Hard Disk","Display":"17 inches,1280*1024@60Hz resolution","External port":"RS-232*3,USB*3,power interface*1,transducer interface*1","VGA":"Support","Power Supply":"10~30V DC\/220V AC","Working temperature":"\uff0d10\u2103~60\u2103","Weight":"9.5kg","Outline size":"380\u00d7295\u00d7118mm"}}