The FOS 15W Multifunction LED Search Light combines a powerful long-range beam, side work light, red/blue warning light and USB mobile-charging function in one rechargeable portable lighting solution. Its 15W LED delivers 1450 lumens of 6000K cool-white illumination with a beam range of up to 1 km.
The FOS YK-M1 series is available with 6000mAh, 10400mAh and 15600mAh rechargeable lithium-ion battery options, allowing users to select a configuration according to their required operating duration. The 6000mAh base configuration provides up to 7 hours of operating time, while higher-capacity variants provide extended estimated backup. An integrated USB output can also be used to charge compatible mobile devices when required.
- Family Model: FOSLSRLYKM1
- LED Power: 15W
- Luminous Flux: 1450 Lumens
- Colour Temperature: 6000K Cool White
- Beam Range: Up to 1 km
- Battery Options: 6000mAh / 10400mAh / 15600mAh Lithium-Ion
- Main Beam Modes: High / Low / Flasher
- Additional Lighting: Work Light + Red/Blue Warning Light
- USB Output: Mobile Charging Function
- Charging: AC Wall Charger
- Switch: Dual Push Button
- Body: Aluminium + ABS Plastic
- Weather Protection: Weather-Proof
- Dimensions: Approx. 22 × 11 × 16 cm
- Weight: Approx. 0.7 kg
- Warranty: 1-Year Warranty Against Manufacturing Defects*
*Physical damage and supplied accessories, including the AC wall charger and shoulder strap, are excluded from warranty coverage.
Description
FOS 15W Multifunction LED Search Light with Work Light, Warning Light & USB Output
The FOS 15W Multifunction LED Search Light is designed for users who need more than a conventional long-range rechargeable search light. It combines a powerful front beam with an integrated side work light, red/blue warning light and USB mobile-charging function, providing several useful functions in one portable unit. With a 15W LED, 1450-lumen output, 6000K cool-white light and beam range of up to 1 km, the FOSLSRLYKM1CW is suitable for security, emergency, roadside, maintenance, agricultural and professional field applications.
15W Long-Range Beam with 1450 Lumens
The main search-light beam is powered by a 15W LED producing 1450 lumens. Its 6000K cool-white output provides clear visibility for night-time inspection and observation, while the beam can reach up to approximately 1 km under suitable conditions. This makes the main beam useful for inspecting property boundaries, roads, open areas, equipment, farms and other locations where a conventional close-range torch may not provide sufficient reach.
The main search-light function provides High, Low and Flasher modes. High mode is intended for stronger illumination, Low provides an alternative output level, and Flasher provides a flashing beam when required. The product uses a dual push-button control arrangement for access to its multifunction lighting features.
Integrated Side Work Light
In addition to its front search-light beam, the unit incorporates a side work light. This provides a practical source of close-area illumination when a concentrated long-range beam is not the most suitable form of lighting. The work light can be useful during maintenance, roadside repairs, equipment inspection, camping, temporary work areas and other situations where users need nearby task illumination.
The combination of a long-range front beam and a close-area work light allows the same rechargeable unit to perform two distinct lighting roles. Users can therefore carry one multifunction light rather than relying on separate search and work lights for many routine field applications.
Red/Blue Warning Light
The multifunction design also incorporates a red/blue warning light. This warning/blinker function adds visibility during roadside situations, emergencies and field operations where attracting attention or indicating the user’s position may be useful.
The warning light should be regarded as a supplementary visibility feature and does not imply any official emergency-service, traffic-control or regulatory approval.
Multiple Lithium-Ion Battery Options
The FOSLSRLYKM1 range is available in 6000mAh, 10400mAh and 15600mAh rechargeable lithium-ion battery configurations. This allows users to select the battery capacity most appropriate for their expected operating duration, from the standard 6000mAh configuration to higher-capacity versions intended for longer field use.
The 6000mAh base configuration has an established FOS commercial operating-time specification of up to 7 hours. For the 10400mAh and 15600mAh versions, the operating-time and charging-time figures shown below are proportional capacity-based estimates intended for practical comparison. Actual results can vary according to the selected lighting function, operating conditions, battery condition and usage pattern.
Battery Options & Estimated Backup
| Model / SKU | Battery Capacity | Charging Time | Operating Time |
|---|---|---|---|
| FOSLSRLYKM1CW | 6000mAh | Approx. 7–8 Hours | Up to 7 Hours |
| FOSLSRLYKM1CWM | 10400mAh | Approx. 12–14 Hours* | Up to Approx. 12 Hours* |
| FOSLSRLYKM1CWL | 15600mAh | Approx. 18–21 Hours* | Up to Approx. 18 Hours* |
*Charging and operating-time figures for the 10400mAh and 15600mAh configurations are proportional capacity-based estimates derived from the established 6000mAh configuration. Actual charging time and operating duration may vary with battery condition, charger performance, lighting function, operating conditions and usage pattern.
All three configurations retain the same multifunction lighting concept, including the long-range front beam, side work light, red/blue warning light and USB mobile-charging function. The principal difference between these variants is the available battery capacity and corresponding expected operating duration.
AC Wall Charging
The search light is supplied with an AC wall charger. The 6000mAh base configuration has an approximate charging time of 7–8 hours. Higher-capacity battery configurations require proportionally longer charging periods, as indicated in the battery-options table above. Charging indication is provided through the charger.
Solar charging and DC car charging are not represented as standard charging features of this FOS configuration.
USB-Out Mobile Charging Function
A useful additional feature is the integrated USB output for mobile charging. Compatible mobile devices can be connected to the USB-Out port when emergency charging is required. This allows the search light’s rechargeable battery system to provide supplementary mobile-device power during field work, travel, emergencies or power interruptions.
The USB function is intended as a convenient supplementary charging feature. No specific fast-charging protocol or output rating is claimed unless separately specified.
Aluminium + ABS Construction
The product combines aluminium and ABS plastic construction in a black finish. It is specified as weather-proof, making it suitable for routine outdoor and field use when handled appropriately. Its approximate dimensions are 22 × 11 × 16 cm, with an approximate weight of 0.7 kg for the 6000 mAh version.
The integrated carrying handle provides convenient portable handling, while the supplied shoulder strap provides another carrying option for users moving between locations.
Ideal Applications & Usage
The FOS 15W Multifunction LED Search Light is well suited to security patrols and property inspection, where the long-range beam can be used to observe boundaries, entrances, open areas and distant objects while the side work light can provide nearby illumination for routine tasks.
For roadside emergencies and vehicle breakdowns, the work light can assist with close-area inspection while the warning light provides an additional visibility function. The USB output can also provide supplementary mobile charging when access to conventional power is limited.
The product is also suitable for farms, rural properties, maintenance work, industrial inspection, camping, outdoor field activities, emergency preparedness and power outages. Its combination of long-range, close-area, warning and mobile-charging functions makes it particularly useful where carrying several separate devices would be inconvenient.
Technical Specifications
- Brand: FOS
- Family Model: FOSLSRLYKM1
- LED Power: 15W
- Luminous Flux: 1450 Lumens
- Colour Temperature: 6000K
- Light Colour: Cool White
- Beam Range: Up to 1 km
- Battery Type: Rechargeable Lithium-Ion
- Battery Voltage: 3.7V
- Battery Capacity Options: 6000mAh / 10400mAh / 15600mAh
- Operating Time: Up to 7 Hours on 6000mAh base configuration; extended estimated backup on higher-capacity variants
- Main Beam Modes: High / Low / Flasher
- Additional Lighting: Work Light + Red/Blue Warning Light
- Switch Type: Dual Push Button
- Charging: AC Wall Charger
- Charging Time: Approx. 7–8 Hours for 6000mAh; proportionally longer for higher-capacity variants
- Charging Indicator: On Charger
- USB Output: Mobile Charging Function
- Body Material: Aluminium + ABS Plastic
- Body Colour: Black
- Weather Protection: Weather-Proof
- Dimensions: Approx. 22 × 11 × 16 cm
- Weight: Approx. 0.7 kg
What’s in the Box
- 1 × FOS Multifunction LED Search Light with Rechargeable Battery
- 1 × AC Wall Charger
- 1 × Shoulder Strap
Warranty
1-Year Warranty Against Manufacturing Defects. Physical damage and supplied accessories, including the AC wall charger and shoulder strap, are excluded from warranty coverage.
Additional information
| LED Power | 15W |
|---|---|
| Luminous Flux | 1450 Lumens |
| Colour Temperature | 6000K |
| Light Colour | Cool White |
| Beam Range | Up to 1 km |
| Battery Capacity | 6000 mAh, 10400 mAh, 15600 mAh |
| Battery Type | Rechargeable Lithium-Ion |
| Battery Voltage | 3.7V |
| Operating Time | Up to 7 Hours (6000mAh); Up to Approx. 12 Hours (10400mAh); Up to Approx. 18 Hours (15600mAh) |
| Main Beam Modes | High / Low / Flasher |
| Additional Lighting | Work Light + Red/Blue Warning Light |
| USB Output | Mobile Charging Function |
| Charging Type | AC Wall Charger |
| Charging Time | Approx. 7–8 Hours (6000mAh); Approx. 12–14 Hours (10400mAh); Approx. 18–21 Hours (15600mAh) |
| Charging Indicator | On Charger |
| Switch Type | Dual Push Button |
| Body Material | Aluminium + ABS Plastic |
| Body Colour | Black |
| Weather Protection | Weather-Proof |
| Product Dimensions | Approx. 22 × 11 × 16 cm |
| Weight | Approx. 0.7 kg |


















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