Dayu Electronics M80 Underwater Obstacle Avoidance Sensor: 100-Meter Detection Safeguards Unmanned Surface Vehicle Operations
In unmanned surface vehicle (USV) underwater operations, the ranging capability of the obstacle avoidance sensor directly determines whether the vessel can navigate safely. Recently, a customer asked us: “M80 underwater obstacle avoidance sensor – what is the maximum detection depth?”
Dayu Electronics provides a clear and professional answer: the standard M80 sensor has a maximum detection depth of 100 meters, while custom versions can be extended to 200 meters, fully covering a wide range of operational needs from nearshore shallow waters to deep-water areas.

The M80's detection capability is not simply a stack of parameters, but rather the result of deep adaptation to complex underwater environments. In typical challenging conditions such as turbid water or sandy turbulent flows, sound wave propagation is easily affected by suspended particle scattering and water flow disturbances, leading to a reduction in effective range. The M80 optimizes transmission power and uses narrow-beam technology to minimize environmental interference while maintaining near-range blind-zone accuracy of 0.15 meters, ensuring reliable echo signals can still be obtained steadily in deep-water environments.

Whether it's the 100-meter standard version for routine inland river and reservoir operations, or the 200-meter custom version for special requirements such as deep-sea detection or large-scale water conservancy facility monitoring, both have been verified in real-world conditions, with data stability and anti-interference performance reaching industry-leading levels.
As an integrated perception device designed specifically for USV platforms, the M80 not only offers deep-water detection capability but also addresses the practical pain points of USV operations. Its IP68 protection rating and low-power design allow for long-term stable immersion in underwater environments, and it is compatible with USV battery power systems. The standard RS485 communication interface supports seamless integration with the USV control system, transmitting obstacle avoidance data in real time to provide precise environmental awareness support for autonomous navigation. From nearshore shallow waters to 200-meter deep-water zones, the M80, with its reliable detection performance and flexible customization options, builds a solid perception defense line that enables USVs to break through water area limitations and carry out underwater operations safely and efficiently.

Dayu Electronics always focuses on the real needs of underwater operations and empowers product iteration through technology. In the future, we will continue to optimize the M80's deep-water detection performance and adaptability to complex environments, providing more precise and reliable obstacle avoidance sensing solutions for USVs and various underwater equipment, helping to advance underwater exploration and safe operations.
