doppler sonar jrc speed log

{"cid":"91197283","title":"JRC JLN 550 4 Beam Pulse Doppler Sonar Marine 2 Axis Speed Log Low Power Consumption High Speed measuring accuracy","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/7c\/c1\/1265bc2ed5c5e1d1ad4b10183ae1-200x200-1.jpg","attrs":{"Brand Name":"JRC","Model Number":"JLN-550","Minimum Order Quantity":"one set","Delivery Time":"15 Days","Certification":"CCS","Place of Origin":"japan","Payment Terms":"L\/C, T\/T","Supply Ability":"30 set per month","Packaging Details":"carton box","Operating system":"2- axis 4-beam pulse Doppler sonar or ROT-combined 3-axis 4-beam pulse Doppler sonar (ROT:option","Operating frequencies":"240kHz (BT : for speed against the ground) 2MHz (WT : for speed against the water)","Distance run range":"0 to 99999.99nm","Depth range":"BT : 2 to 250m (below hull bottom)depending upon sea bottom conditions WT : 3m or more (below hull bottom)","Speed measuring accuracy":"\u00b11% or 0.1 kts whichever is greater","Total distance run accuracy":"\u00b11% or 0.1 nm whichever is greater","Power consumption":"300VA or less","Operating temperature":"-15deg.C to +55deg.C"}}