Fish Finder Lcd Sonar Sensor Portable Fishing 100m Alarm Transducer Wireless Kindly remind that FFC1108-1 has only wired mode, and FFCW1108-1 has only wireless mode, and you cannot match the sensor and monitor randomly.FFC1108-101.PUT THE SENSOR IN FISHING SPOT02.SONAR SENSOR DETECT03.SONAR COVERAGE:45 DEGREES IN 200Khz1. Sensitivity indicator 5.Battery strength indicator2. Battery save on/off 6.Water depth indicator3. Fish alarm on/off 7.Backlight on/off4. Left arrow 8.Fish depth indicator 9.Right arrow 10.Power on/off PRODUCT SPECIFICATION OF FFC1108-1:1) Display: 2inch TN/ANTI-UV LCD2) Back lighting: White LED3) Depth Capability: 328feet(100m)4) Power Requirement: 4xAAA alkaline batteries5) Waterproof design: level-4 (spray-water-proof)6) Show water depth, fish location, and bottom grass & rock7) User selectable sensitivity,depth units, and fish alarm setting 8) Operational Temperature: 14°F to 122°F(-10°C to 50°C) FFCW1108-11. anti-clutter system automatically filter clutter 2. Fish alarm3. Sonar coverage :90 degrees in 125 Khz 4. Wireless operating range HOW TO USE LUCKY FISH FINDER?01.tie it to the end of fishing line and cast it into the water02.wireless sonar sensor send sound waves03.returned echoes transmitted to the fish finder1. signal indicator 6.battery strength indicator2. Sensitivity indicator 7.water depth indicator3. Battery save on/off 8.backlight on/off4. Fish alarm on/off 9.fish depth indicator5. Left arrow 10.right arrow 11.power on/off 1. seal cover2. Seal ring3. Battery place4. Sonar detection5. Hole tied to fishing line PRODUCT SPECIFICATION OF FFCW1108-1:1) Display: 2inch TN/ANTI-UV LCD2 )Back lighting: White LED3) Depth Capability: 130feet(40m)4) Wireless Sonar: 90 degrees beam angle in 125Khz5) Wireless operational Range: 400feet(120m)6) Power Requirement: 4xAAA alkaline batteries7) Wireless Sensor battery reauirement: one replaceable CR2032 battery8) Waterproof design: level-4 (spray-water-proof)9) Show water depth, fish location, and bottom grass & rock10) User selectable sensitivity , depth units, and fish alarm setting 11) Wireless Sensor could shut down when it is out of the water12) Operational Temperature: 14°F to 122°F(-10°C to 50°C) If you have any further questions,please feel free to contact us at any time!