1. Wired connection - the sonar alarm sensor of the fish finder adopts a wired connection method, and the sensor and the detector can be connected through a cable, which has higher stability, more reliable data transmission, and more convenient use. 2. Portable design——The sonar alarm sensor of the fish finder adopts a portable design, which is light in weight and easy to carry. It is very suitable for fishing enthusiasts who need to go fishing frequently, and it is more free and convenient to use. 3. High-precision sonar technology - the sonar alarm sensor of the fish finder adopts high-precision sonar technology, which can effectively detect the number, size and position of fish in the water, making fishing easier and more accurate, and can observe the sandy bottom at the same time Grassy rocks and other terrain in the lower part. 4. Alarm function - the sonar alarm sensor of the fish finder is equipped with an alarm function. When fish is detected, a sound prompt will be issued, which is convenient for users to find fish schools in time and improve the success rate of fishing. 5. Multi-scenario use——In addition to being used in fishing, this detector can also be used to measure freshwater environments such as lakes, rivers, and reservoirs, as well as saltwater environments such as oceans, beaches, and sandy beaches. It can be used in multiple scenarios use, more practical.