1. Introduction
This manual provides detailed instructions for the proper use and maintenance of your LUCKY FF-1108-1CLA Wireless/Wired Sonar Fish Finder. This device is designed to assist in locating fish and determining water depth and bottom contour in various fishing environments, including oceans, rivers, and lakes. Please read this manual thoroughly before operating the device to ensure optimal performance and longevity.
2. Product Overview
2.1 Key Features
- Display: 2.4-inch TFT color LCD
- Depth Capability: Wired transducer up to 328 feet (100m); Wireless sensor up to 147 feet (45m)
- Sonar Coverage: 45-degree beam angle at 200Khz (Wired); 90-degree beam angle at 125Khz (Wireless)
2.2 Components
The LUCKY FF-1108-1CLA includes the main display unit, a wireless sonar sensor, a wired transducer with cable, a charging cable, and a storage case.

Figure 1: Main Display Unit with Screen Elements. Labels include Wireless Signal, Sensitivity, Water Depth, Water Temperature, W-Sensor Battery Indicator, Battery Strength Indicator, Upper Zoom Range, Small Fish Icon with Depth, Medium Fish Icon with Depth, Large Fish Icon with Depth, Bottom Contour, and Lower Zoom Range.

Figure 2: Wireless Sonar Sensor Usage Diagram. Step 1: Tie the sensor to fishing line and cast into water. Step 2: Wireless sonar sensor sends sound waves. Step 3: Returned echoes are transmitted to the fish finder display unit.

Figure 3: Wireless Sonar Sensor. This yellow, spherical sensor transmits sonar data wirelessly to the main display unit.

Figure 4: Display Unit with Wired Transducer. The wired transducer is connected to the main unit via a cable and includes a float for deployment.

Figure 5: Complete Product Package. Shows the display unit, wireless sensor, wired transducer, and storage case.
3. Setup
3.1 Charging the Device
The main display unit and wireless sensor contain rechargeable batteries. Use the provided USB cable to charge them. Connect the USB cable to a computer or a compatible USB power adapter (not included). Ensure the devices are fully charged before initial use for optimal battery life.
3.2 Connecting the Wired Transducer
- Locate the transducer port on the top of the main display unit.
- Carefully insert the cable connector from the wired transducer into this port. Ensure a secure connection.
- The wired transducer can be mounted to the bottom side of a boat or attached to a fishing line for deployment.
3.3 Preparing the Wireless Sensor
- Ensure the wireless sensor is charged.
- Attach the wireless sensor to your fishing line. It is designed to float on the water surface.
- Cast the sensor into the desired fishing area. The sensor will automatically activate upon contact with water.
4. Operating Instructions
4.1 Powering On/Off
- To power on the main display unit, press and hold the power button (usually located on the top or side) until the screen illuminates.
- To power off, press and hold the power button again until the unit shuts down.
4.2 Display Interpretation
Refer to Figure 1 for a visual guide to the display elements:
- Water Depth: Indicates the current depth of the water directly beneath the transducer/sensor.
- Water Temperature: Displays the water temperature.
- Fish Icons: Represent detected fish. Different sizes may indicate larger or smaller fish.
- Bottom Contour: Shows the shape and composition of the seabed or lakebed.
- Zoom Range: Allows you to focus on specific depth ranges for more detailed viewing.
- Battery Indicators: Show the remaining battery life for both the main unit and the wireless sensor.
- Wireless Signal: Indicates the strength of the connection between the display unit and the wireless sensor.
4.3 Mode Selection (Wireless/Wired)
The device automatically detects the connected transducer. If both are connected, you may need to select the desired mode through the menu. Consult the on-screen menu options for switching between wireless and wired sonar modes.
4.4 Adjusting Settings
Use the directional buttons and menu button on the display unit to navigate through settings. Common adjustable settings include:
- Sensitivity: Adjust to filter out noise or detect weaker signals. Higher sensitivity detects more, but may show more clutter.
- Depth Range: Manually set the depth range or use auto-ranging.
- Fish Alarm: Enable or disable an audible alarm when fish are detected.
- Units: Switch between feet/meters for depth and Fahrenheit/Celsius for temperature.
5. Maintenance
5.1 Cleaning
- After each use, wipe the display unit, wireless sensor, and wired transducer with a soft, damp cloth.
- Do not use abrasive cleaners or solvents, as these can damage the device.
- Ensure all components are dry before storing.
5.2 Storage
- Store the fish finder in its protective case when not in use.
- Keep the device in a cool, dry place, away from direct sunlight and extreme temperatures.
5.3 Battery Care
- Recharge the batteries regularly, even if the device is not used frequently, to maintain battery health.
- Avoid completely draining the battery before recharging.
6. Troubleshooting
6.1 No Display/Power
- Check battery level. Recharge the unit if the battery is low.
- Ensure the power button is pressed and held sufficiently to turn on the device.
6.2 No Sonar Readings/Inaccurate Readings
- For Wireless Sensor: Ensure the sensor is floating correctly in the water and is within range of the main unit. Check the wireless signal strength indicator on the display.
- For Wired Transducer: Verify the transducer cable is securely connected to the main unit. Ensure the transducer is fully submerged and free from obstructions.
- Adjust the sensitivity setting. Too low sensitivity may miss fish; too high may show clutter.
- Ensure the water depth is within the specified operating range (328ft for wired, 147ft for wireless).
6.3 Device Freezes or Becomes Unresponsive
- Attempt a soft reset by pressing and holding the power button for an extended period (e.g., 10-15 seconds) until the device restarts or shuts down.
- If the device remains unresponsive, allow the battery to fully discharge, then recharge and attempt to power on again.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | LUCKY |
| Model Name | FF-1108-1CLA |
| Power Source | Battery Powered |
| Screen Size | 2.4 Inches |
| Display Type | LCD |
| Item Weight | 0.15 Kilograms |
| Maximum Measuring Depth (Wired) | 328 Feet (100m) |
| Maximum Measuring Depth (Wireless) | 147 Feet (45m) |
| Mounting Type | Surface Mount |
| Item Dimensions (LxWxH) | 5.12 x 2.76 x 1.38 inches |
| Manufacturer | JINHUA LUCKY ET MANUFACTURER CO.,LTD. |
8. Warranty and Support
8.1 Warranty Information
This LUCKY FF-1108-1CLA Fish Finder comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
8.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your product, please contact LUCKY customer support through the retailer where the product was purchased or refer to the official LUCKY website for contact information.







