With years development and solved many technical problems, JUNLU launched the domestic earliest color Doppler Speed Log. It is the domestic top level, fill the gap in domestic market.

DS90 confirm the latest IMO MSC.334(90) rules and correlative standards. The navigation speed is averaged by the two values which individual detected by dual ultrasonic beam. This can minimize the deviation. A plenty of DATA interface allow  it connect to other equipment like Radar, ECDIS, AIS and VRD.