Dave Genz has made his “Blue Box” nearly indestructible so it will last for years of hard use. Genz redesigned the battery storage compartment and added a universal transducer
The T-BOX (SP200) is a more permanently mounted system that is mounted in a boat with access to a 12 volt power supply (not included). As the name implies,
LPS-1 Hand-Held Depth Finder – Nautical Yellow–The LPS-1 is simple to use. Just put it in the water, point and push the “ON” button. The depth or distance is