0 3m dual frequency echo sounder

{"cid":"91190814","title":"D580 Dual Frequency Echo Sounder","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/e0\/69\/2adf25f6061cf98903bbd58ecf00-200x200-1.jpg","attrs":{"Brand Name":"CHC","Model Number":"D580","Minimum Order Quantity":"1","Delivery Time":"3-5 work days after the goods are paid","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, Western Union, MoneyGram, L\/C","Supply Ability":"20000 per set","Packaging Details":"with standard packing way"}}

{"cid":"91222737","title":"Hi Target HD-MAX 3D Echo Sounder Hydrographic Survey Depth Measuring Instrument With GPS","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/15\/f5\/cc5b4b6e097b8e7b56312d619230-200x200-1.jpg","attrs":{"Price":"$7000,00","Brand Name":"Hi-Target","Model Number":"HD-MAX","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 Hi-Target HD-MAX","Memory":"2GB","USB port":"3 X USB2.0","VGA port":"1280 X 1024@60HZ","Serial port":"2X RS232","Place of Origin":"China","Single package size:":"70X55X45 cm","Single gross weight:":"30.000 kg"}}

{"cid":"91197283","title":"High Resolution HD-380 Digital Dual Frequency Dustproof Single Beam Echo Sounder Portable","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ea\/41\/35cd76f57c580170a3973e155588-200x200-1.jpg","attrs":{"Brand Name":"THUNDSEA","Model Number":"HD-380 Digital Dual Frequency Ecosounder","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":"100~750KHz(high frequency adjustable) @10~50KHz(low frequency adjustable)","Maximum transmit power":"500W(200KHz High Frequency Channel) @1000W(20KHz Low Frequency Channel)","Range":"0.3m~600m(high frequency)@ 0.3m~2000m(low frequency)","Accuracy":"\u00b110mm\uff0b0.1%h,resolution\uff1b1 cm","Draft adjustment range":"0.0m~15m","Soung Speed Adjustment":"1370~1700m\/s,resolution 1m\/s","Maximum rate of water depth sampling":"30Hz","CPU main frequency":"1.6GHz","DDR2 Memory":"1G","Maximum sampling rate of water depth":"30 times per second","Storage":"Built-in 4G CF card memory(customizable)","Transmit Data":"Various simulated formats and adjustable baud rate","Display":"High brightness 12 inches LCD display with 1024*768, 600cd\/m\u00b2 resolution(Candelaper square meter)","External port":"2*RS-232 serial port,3*USB,1*DC\/AC power inter- face,1*transducer interface","Power supply":"DC 12V orAC 220V","Power consumption":"20W","Environment":"Working temperature \uff0d30\u2103~60\u2103,waterproof and shock-proof","Size":"440mm\u00d7341mm\u00d7164mm","Weight":"9kg"}}