This device is a JRC JFE-680 Echo Sounder, a navigational instrument used to measure water depth.
- Display: Features a 10.4-inch high-visibility color TFT LCD screen with 640×480 pixel resolution.
- Printer: Includes a built-in thermal printer for printing the history of echograms.
- Data Storage: Capable of memorizing the last 24 hours of depth data.
- Frequency: Operates on 50 kHz or 200 kHz frequencies.













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