The Hondex HE-881 is a compact, professional dual-frequency marine echo sounder designed for recreational boats, commercial fishing vessels, and workboats requiring accurate and reliable depth measurement. Equipped with an 8.4-inch sunlight-viewable color LCD display, the HE-881 provides excellent visibility in all lighting conditions while delivering clear underwater images and precise bottom tracking. It operates with 50 kHz and 200 kHz dual frequencies, allowing users to switch between deep-water penetration and high-resolution shallow-water detection for maximum versatility.

The system features a simple, user-friendly interface with dedicated controls for gain, range, and clutter adjustment, enabling operators to optimize sonar performance according to changing sea conditions. Multiple display modes, including Bottom Lock, Auto/Manual Expansion, and Split Screen, provide enhanced target identification and detailed seabed analysis. The HE-881 also supports portrait and landscape display orientations, offering flexible installation and viewing options.

With support for 600 W or 1 kW transducers, the HE-881 provides dependable depth sounding from shallow coastal waters to depths of approximately 1,000 meters. It includes NMEA output for integration with compatible chart plotters and navigation systems, while optional water temperature sensing and depth/fish alarms further enhance operational capability. Its rugged marine construction and low power consumption make it suitable for continuous operation in demanding marine environments.