DUCANE公司是全球水下定位声呐信标研发与销售的领导者，并长期向航空行业提供最物美价廉的产品。Ducane致力于提供的优质产品，其每个定位声呐信标都经过在独立水箱测试及作业来保证每个产品的质量，其客户服务也是首屈一指的。

PN:DK120-90 为DK120的升级产品，其声呐信标发出的信号可持续90天。

The DK120/90 is the newest version of the industry standard in underwater acoustic locating beacons for the aerospace, maritime, and military markets. Building on reliability of the DK120, the DK120/90 will assist in location of CVR/FDR devices.

The DK120/90 will provide a minimum of 90 days of uninterrupted operation once activated, complying with TSO/ETSO-C121b. These beacons have been tested to, and meet, or exceed, all requirements of FAA / EASA TSO/ETSO-C121b,SAE AS8045A in with additional test for batteries as per TSO/ETSO-C142a.