881A is a programmable, multi-frequency digital imaging sonar. When the frequency is set before delivery, the user can also set it according to the application. The appearance of multi-frequency sonar enables the user to use only one sonar to obtain detailed and various precision image data. 881A also has the advantages of high performance, low cost, low power consumption and simple setup and installation. It is widely used in ROV, AUV and UUV of various specifications.

Application: Shanghai jiaotong university, shenzhen huigu, etc.