China DS99 Doppler Speed Log:
DS99 Doppler Speed Log
Display：7 inch TFT 800x480 pixels
Power Supply：AC110/220V 50/60Hz
STW Speed: Analog+Digital speed display
Trip Counter: Count 0～ 9999.99 NM (clearable)
Total Counter: Count 0～999999.99 NM
Distance Accuracy: 0.2 NM or 2% (whichever is greater)
Speed Accuracy: 0.2 kn or 2% (whichever is greater)
Speed Range: -10~+40 kn
Data lutput: NMEA0183(VTG)）
Data Output: NMEA0183VBW/VLW/200P
Humidity: 10～ 90% Relative
Temperature: -15～+55°C
Protection: Display：IP23
Controller ：IP23
Transceiver：IP56
Transducer：IP68