NEEWER S102-400W PRO Flash Lighting Kit User Manual

1. Introduction

This user manual provides comprehensive instructions for the NEEWER S102-400W PRO Flash Lighting Kit. This professional studio monolight kit is designed for various photography applications, including commercial, portrait, wedding, and still life photography. Please read this manual thoroughly before use to ensure proper operation and to maximize the lifespan of your equipment.

2. What's in the Box

The NEEWER S102-400W PRO Flash Lighting Kit includes the following components:

• 2 x S102-400W PRO Monolight (with Modeling Lamp)
• 2 x 2.4G Trigger
• 2 x Standard Reflector
• 2 x Power Cord
• 2 x Light Stand
• 2 x Softbox
• 1 x 5-in-1 Reflector
• 1 x Carrying Bag
• 1 x User Manual

Image: All components included in the NEEWER S102-400W PRO Flash Lighting Kit, including two monolights, two light stands, two softboxes, two 2.4G triggers, two standard reflectors, a 5-in-1 reflector, power cords, and a carrying bag.

3. Key Features

• High Output Flash: The S102-400W PRO monolight delivers 400Ws of flash power with a guide number of GN62 (1m, ISO100). It features a 30W LED modeling lamp (5600K, 4370lux/m) for precise lighting previews. Flash duration ranges from 1/100s to 1/1000s, with a quick recycling time of ≤1.5s.


Image: Close-up of the S102-400W PRO flash head highlighting its 400Ws flash power, GN62 guide number, 5600K stable color temperature, and flash power levels from 1/64 to 1/1. An inset shows the digital display with control settings.

• Consistent Color Temperature: Provides a stable 5600K (±200K) cool daylight color temperature for accurate color reproduction. The flash tube is designed for durability, supporting up to 1000 continuous full power flashes.

Image: Detailed view of the 30W 5600K LED modeling light, showing its brightness adjustment capabilities from 10% to 100% in 10% increments. Three example portraits demonstrate the effect of different modeling lamp brightness levels.
• 2.4G Wireless Q System: Includes 2.4G triggers for high-speed sync up to 1/200s within a 330ft/100m range. The system supports 32 channels and is compatible with QPRO Triggers (sold separately) for advanced multi-flash setups. Optical slave modes (S1/S2) allow triggering by other manual or TTL master units.


Image: A photographer using the 2.4G wireless Q system with the S102-400W PRO flash and softbox to light a model in a studio setting. The image highlights the trigger, synchronization speed, channels, and distance capabilities.

• Efficient Cooling System: Features an advanced, silent heat dissipation system to prevent overheating during extended use, ensuring consistent performance and product longevity.


Image: Diagram illustrating the efficient cooling system of the S102-400W PRO monolight, showing airflow, thermally conductive metal shell, and an advanced silent fan for heat dissipation.

• Bowens Mount Compatibility: Equipped with a universal Bowens mount, allowing compatibility with a wide range of light modifiers such as softboxes, beauty dishes, snoots, and reflectors.

Image: Close-up of the universal Bowens mount on the S102-400W PRO flash, demonstrating its compatibility with various light modifiers like parabolic softboxes, square softboxes, standard reflectors, snoots, beauty dishes, and octagonal softboxes.
• Integrated Umbrella Hole: A built-in umbrella hole allows for easy attachment of photography umbrellas (not included) for additional light shaping options.
• User-Friendly Controls: Features an HD display and intuitive buttons for quick and easy adjustment of flash settings.


Image: A collage showing various product details of the S102-400W PRO monolight, including the wireless control interface (SYNC port), convenient handle, lamp body size dimensions, and a clear LCD control panel with labeled buttons for group/channel, S1/S2 modes, and adjustment knob.

4. Safety Information

Please observe the following safety precautions to prevent damage to the product or injury to yourself and others:

• Do not expose the unit to rain, moisture, or extreme temperatures.
• Do not touch the flash tube or modeling lamp immediately after use, as they can be hot.
• Ensure the unit is properly grounded when connected to a power source.
• Always disconnect power before cleaning or performing maintenance.
• Avoid direct eye exposure to the flash, as it can cause temporary vision impairment.
• Keep out of reach of children.
• Use only NEEWER-approved accessories and power cords.

5. Setup Instructions

5.1 Assembling the Light Stand

1. Extend the legs of the light stand to form a stable base.
2. Tighten the locking knob at the base to secure the legs.
3. Extend the center column to the desired height and tighten the section locking knobs.

5.2 Mounting the Monolight

1. Attach the S102-400W PRO monolight to the top stud of the light stand.
2. Secure the monolight by tightening the mounting screw on the monolight's bracket.
3. Adjust the tilt angle of the monolight using the tilt adjustment knob.

5.3 Attaching Light Modifiers (Softbox/Reflector)

1. To attach a softbox, assemble the softbox according to its specific instructions.
2. Align the Bowens mount ring of the softbox with the Bowens mount on the monolight.
3. Insert the softbox and rotate it clockwise until it clicks into place.
4. For the standard reflector, align its tabs with the slots on the Bowens mount and twist to lock.

5.4 Connecting Power

1. Connect the power cord to the power input port on the monolight.
2. Plug the other end of the power cord into a suitable AC power outlet.

5.5 Setting up the 2.4G Trigger

1. Insert the 2.4G trigger onto your camera's hot shoe.
2. Power on the trigger and the monolight.
3. Set the same channel and group on both the trigger and the monolight for wireless communication. Refer to the monolight's display and trigger's controls for specific adjustments.

6. Operating Instructions

6.1 Power On/Off

• To power on the monolight, flip the power switch located on the rear panel.
• To power off, flip the switch back to the OFF position.

6.2 Adjusting Flash Power

• Use the adjustment knob on the monolight's control panel to increase or decrease the flash power. The power levels range from 4.0 to 10 (1/64 to 1/1).
• The current power setting will be displayed on the LCD screen.

6.3 Adjusting Modeling Lamp Brightness

• Press the "Modeling Light" button (often labeled with a light bulb icon) to activate the modeling lamp.
• Rotate the adjustment knob to set the brightness from 10% to 100% in 10% increments.

6.4 Wireless Triggering (2.4G System)

• Ensure the monolight and trigger are set to the same group (GR) and channel (CH).
• The trigger will wirelessly fire the monolight when your camera's shutter is released.
• For high-speed sync (HSS), ensure your camera and trigger support this function and are configured correctly.

6.5 Optical Slave Modes (S1/S2)

• S1 Mode: The monolight will fire in response to the first flash it detects from a master flash unit (manual flash).
• S2 Mode: The monolight will ignore the first pre-flash from a TTL master flash unit and fire on the second flash. This is useful when using a camera's built-in flash or another TTL flash as a master.
• To activate S1/S2 mode, press the S1/S2 button on the monolight's control panel.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the monolight and accessories. Do not use abrasive cleaners or solvents. For the flash tube and modeling lamp, use a lint-free cloth.
• Storage: When not in use, store the kit in the provided carrying bag in a cool, dry place, away from direct sunlight and moisture.
• Inspection: Regularly check power cords and connections for any signs of damage. If any damage is found, discontinue use and contact customer support.

8. Troubleshooting

9. Specifications

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the official NEEWER website or contact NEEWER customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.

Official NEEWER Website: www.neewer.com