1. Introduction
The LUCKY FF1108-1CLA is a versatile portable fish finder designed to enhance your fishing experience. It features both a wired transducer and a wireless sonar sensor, allowing for flexible use in various fishing environments, from fresh to saltwater. This device accurately detects fish location, fish size, water depth, and underwater contour, providing essential information to anglers.

Figure 1: LUCKY FF1108-1CLA Fish Finder and its components.
2. Package Contents
Please verify that all items are present in your package:
- 1 x Handheld Wireless Receiving Host
- 1 x Wired Transducer with 8M (26ft) Cable
- 1 x Wireless Sonar Sensor
- 1 x USB Charging Cable
- 1 x USB Adapter Charger
- 1 x Vehicle Charger
- 1 x Neck Strap
- 1 x User Manual (this document)
3. Setup
3.1 Charging the Device
Before first use, ensure both the handheld unit and the wireless sonar sensor are fully charged.
- Handheld Unit: Connect the USB charging cable to the handheld unit and a power source (USB adapter or vehicle charger). The charging indicator will show the charging status.
- Wireless Sonar Sensor: Open the cover of the wireless sensor to access the charging port. Connect the USB charging cable. The Charging Indicator will illuminate during charging.

Figure 2: Wireless Sonar Sensor charging ports and indicators.
3.2 Connecting the Wired Transducer
The wired transducer is suitable for boat fishing or when a direct connection is preferred for maximum depth capability.
- Connect the transducer cable to the appropriate port on the handheld unit.
- Attach the transducer to your boat hull or a pole, ensuring it is submerged in water without air bubbles underneath for optimal performance.
- The float on the cable helps maintain the transducer's position in the water.

Figure 3: Wired Transducer components.
3.3 Using the Wireless Sonar Sensor
The wireless sensor is ideal for shore fishing, kayak fishing, or casting from a boat.
- Ensure the wireless sensor is charged.
- Turn on Switch 1 for the W-Sensor. The Working Indicator should light up.
- Cast the wireless sensor into the water. It will automatically activate upon contact with water.
- The handheld unit will automatically connect to the wireless sensor when both are powered on and within range.
4. Operating Instructions
4.1 Power On/Off
Press and hold the power button on the handheld unit to turn it on or off.
4.2 Display Features
The device features a 2.4-inch TFT color LCD with 240V x 960H pixels. The display shows underwater contour, water temperature, fish depth scale, and fish icons.

Figure 4: Fish Finder display and feature overview.
4.3 Menu Navigation and Settings
Use the directional buttons on the handheld unit to navigate through the menu. Press the 'Menu' button to access settings.
- Sensitivity: Adjust the 10-level sensitivity settings to detect fish in various water conditions. Higher sensitivity detects smaller signals but may also pick up more clutter.
- Zoom: Use the zoom function to magnify a specific depth range, avoiding interference from different water depths.
- Units: Select preferred units for depth and temperature (e.g., meters/feet, Celsius/Fahrenheit).
- Depth Range: Manually set the depth range for display.
- Shallow Alarm: Set an alarm to sound when the water depth falls below a specified value.
- Language: Choose between English and Russian.
- Brightness: Adjust screen brightness for optimal viewing in different lighting conditions.
- Fish Icon: Enable or disable fish icons. When enabled, small, medium, or large fish icons will appear on the screen.
- Fish Alarm: Set an audible alarm to sound when fish are detected. You can specify the size of fish (small, medium, large) that trigger the alarm.
- Chart Speed: Adjust the speed at which the sonar history scrolls across the screen.
- Anti-clutter System: The device automatically filters clutter for clearer sonar readings.

Figure 5: Anti-clutter system in action.
4.4 Operational Temperature
The fish finder is designed to operate in temperatures ranging from -10°C to 50°C (14°F to 122°F).

Figure 6: Operational Temperature Range.
4.5 Simulation Mode
Utilize the simulation mode to familiarize yourself with the unit's operation and display before heading out for fishing.
5. Maintenance
- Cleaning: Wipe the unit and sensors with a soft, damp cloth after each use. Avoid abrasive cleaners or solvents.
- Storage: Store the fish finder in a dry, cool place when not in use. Ensure batteries are charged periodically if stored for extended periods.
- Transducer Care: Ensure the transducer surface is clean and free of scratches or marine growth for accurate readings.
- Battery Care: Do not expose batteries to extreme temperatures. Dispose of batteries according to local regulations.
6. Troubleshooting
- No Display/Power: Ensure the handheld unit is fully charged. Check power connections.
- No Sonar Readings: Make sure the transducer/sensor is fully submerged in water and free of air bubbles. Check cable connections for the wired transducer. Ensure the wireless sensor is turned on and within range.
- Inaccurate Depth Readings: Clean the transducer/sensor surface. Ensure the transducer is positioned correctly and not obstructed.
- Wireless Sensor Not Connecting: Ensure the wireless sensor is charged and activated in water. Check that the handheld unit's wireless function is enabled.
- Short Battery Life: Ensure the device is fully charged before use. Reduce screen brightness if possible.
7. Specifications
| Component | Feature | Specification |
|---|---|---|
| Host Display | Display Type | 2.4-inch TFT Color LCD |
| Pixels | 240V x 960H | |
| Display Contrast | 1-10 level adjustable | |
| Backlight | White LED | |
| Language Options | English / Russian | |
| Power | 2 * 2000mAh rechargeable lithium battery | |
| Wired Transducer | Depth Range | 100m / 328ft |
| Sonar Coverage | 45° in 200 kHz | |
| Cable Length | 8m / 26ft | |
| Wireless Sonar Sensor | Depth Capability | 45m / 145ft |
| Wireless Operating Range | 60m / 200ft | |
| Sonar Coverage | 90 degrees beam angle in 125Khz | |
| General | Operational Temperature | -10°C to 50°C (14°F to 122°F) |
8. User Tips
- Optimize Sensitivity: Start with a medium sensitivity setting and gradually increase it until you see clear fish arches or icons without excessive clutter. In murky water, higher sensitivity might be needed.
- Understand Fish Icons: Remember that fish icons are interpretations. Larger icons generally indicate larger fish or stronger signals, but actual size can vary.
- Monitor Battery: Always check battery levels before a fishing trip, especially for the wireless sensor, to avoid interruptions.
- Practice with Simulation Mode: Use the simulation mode to get comfortable with all settings and display interpretations before using it on the water.
- Consider Water Conditions: Sonar performance can be affected by water clarity, temperature, and salinity. Adjust settings accordingly.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.