This Furuno DFF1 Network Sounder Module is a top-of-the-line device designed for fish and depth finders. It is made by the trusted brand Furuno and has a manufacturer part number of DFF1. The module is made in Korea. It is perfect for those who are looking to enhance their boat's sounder capabilities. The module is compatible with various Fish Finders & Depth Finders and is a great addition to any boat's electronics and navigation system. This item is a must-have for any fishing enthusiast and is sure to provide accurate and reliable sounder data.