Sofirn ST10

Contents

SOFIRN ST10 Mini Clamp Flashlight User Manual

Model: ST10

Brand: Sofirn

Introduction

The SOFIRN ST10 is a compact and versatile Everyday Carry (EDC) flashlight designed for various scenarios. It features a powerful white main light, a white side light, and a red side light. Its magnetic tail cap and magnetic clip offer flexible mounting options. Two separate buttons control the main and side lights for intuitive operation.

SOFIRN ST10 Mini Clamp Flashlight in green and grey.
The SOFIRN ST10 flashlight is available in green and grey, showcasing its compact design and dual light sources.
This video provides a comprehensive overview of the SOFIRN ST10 flashlight, including its compact size, various light modes, and practical applications like attaching to a backpack or using for map reading.

Package Contents

Please check the package contents upon unboxing:

  • SOFIRN ST10 Flashlight
  • User Manual
  • USB-C Charging Cable
  • Lanyard
  • Spare O-rings
  • 14500 Battery (if included in package)
SOFIRN ST10 flashlight package contents.
Image showing the SOFIRN ST10 flashlight, user manual, USB-C cable, lanyard, and spare O-rings included in the box.

Setup

Battery Installation

The ST10 is designed to work with a 14500 battery and is also compatible with AA Alkaline and AA Ni-MH batteries. Ensure correct polarity when inserting the battery.

SOFIRN ST10 battery compatibility with 14500, AA Alkaline, and AA Ni-MH batteries.
Diagram illustrating the ST10's compatibility with 14500, AA Alkaline, and AA Ni-MH batteries, highlighting the detachable design for easy battery replacement.
SOFIRN ST10 battery installation.
Image showing the 14500 battery being inserted into the flashlight.

Charging

The included 14500 battery is USB Type-C rechargeable. Connect the USB-C cable to the battery for charging.

USB-C charging for the SOFIRN ST10 battery.
Close-up of the 14500 battery being charged via a USB-C cable.

Operating Instructions

General Operation

The ST10 features two separate buttons for controlling the main and side lights. Refer to the diagram below for detailed operation.

Diagram showing general operation of SOFIRN ST10 flashlight with main light and side light controls.
This diagram details the general operation of the ST10. The main light switch controls Moon (long press from OFF), Low, Medium, High (long press from ON), Turbo (2 clicks), and Beacon (2 clicks from Turbo). The side light switch controls White Light (Low, Medium, High, Turbo) and Red Light (Low, Medium, High, Flash).

Main Light

  • ON/OFF: 1 click.
  • Moonlight Mode: Long press from OFF.
  • Brightness Adjustment (Low/Medium/High): Long press from ON to cycle through modes.
  • Turbo Mode: 2 clicks.
  • Beacon Mode: 2 clicks from Turbo.
Demonstration of SOFIRN ST10 main light modes: Moon, Low, Medium, High, Turbo.
A user demonstrates the main light modes of the ST10, showing the brightness levels for Moon (1lm), Low (10lm), Medium (100lm), High (330lm), and Turbo (1000lm).

Side White Light

  • ON/OFF: 1 click.
  • Brightness Adjustment (Low/Medium/High): Long press from ON to cycle through modes.
  • Turbo Mode: 2 clicks from ON.
Demonstration of SOFIRN ST10 side white light modes: Low, Medium, High, Turbo.
A user demonstrates the side white light modes of the ST10, showing the brightness levels for Low (7lm), Medium (75lm), High (300lm), and Turbo (500lm).

Side Red Light

  • ON/OFF: 1 click.
  • Brightness Adjustment (Low/Medium/High): Long press from ON to cycle through modes.
  • Flash Mode: 2 clicks from ON.
Demonstration of SOFIRN ST10 side red light modes: Low, Medium, High, Flash.
A user demonstrates the side red light modes of the ST10, showing the brightness levels for Low (3lm), Medium (45lm), High (100lm), and Flash (100lm).

Lock/Unlock Operation

When the flashlight is OFF, triple-click the button to lock or unlock it. When locked, the red light will flash twice to indicate its locked status.

Diagram illustrating the triple-click lock/unlock operation for the SOFIRN ST10 flashlight.
This diagram shows the triple-click action required to lock or unlock the ST10 flashlight when it is powered off. A red light flashes twice to confirm the lock status.

Battery Level Indicator

The flashlight features a battery level indicator to keep you informed of the remaining power.

  • Solid Green: 30% - 100% battery.
  • Solid Red: 10% - 30% battery.
  • Flashing Red: Less than 10% battery.
SOFIRN ST10 battery level indicator.
Image showing the LED indicator on the flashlight and its corresponding battery level (solid green for 30-100%, solid red for 10-30%, flashing red for less than 10%).

Maintenance

To ensure optimal performance and longevity of your SOFIRN ST10 flashlight, follow these maintenance guidelines:

  • Cleaning: Wipe the flashlight with a clean, soft cloth. Do not use abrasive cleaners or solvents.
  • Lubrication: Periodically lubricate the O-rings with silicone grease to maintain water resistance.
  • Battery Care: Remove the battery if the flashlight will not be used for an extended period to prevent leakage. Store batteries in a cool, dry place.
  • Water Resistance: The ST10 is IPX6 waterproof. While it can withstand strong jets of water, it is not designed for submersion. Ensure the USB-C port cover is securely closed to maintain water resistance.
SOFIRN ST10 flashlight demonstrating IPX6 waterproof rating.
Image showing the ST10 flashlight being splashed with water, illustrating its IPX6 waterproof and 1m impact resistance features.

Troubleshooting

Common Issues and Solutions

Flashlight does not turn on:

  • Check if the battery is inserted with correct polarity.
  • Ensure the battery is charged.
  • Check if the flashlight is in locked mode (red light flashes twice when attempting to turn on). Triple-click to unlock.
  • Try a different compatible battery (AA Alkaline or AA Ni-MH) to rule out battery issues.

Light output is dim or flickers:

  • The battery might be low. Recharge or replace the battery.
  • Ensure the battery contacts are clean.
  • Check for loose connections.

Water ingress:

  • Ensure the USB-C port cover is fully sealed.
  • Check O-rings for damage or proper seating.

Specifications

The following table details the technical specifications and performance parameters of the SOFIRN ST10 flashlight.

FeatureDetail
Brand NameSofirn
Model NumberSofirn ST10
Item TypeFLASHLIGHTS
Body MaterialAluminum alloy
Light SourceLED bulbs
Lumen1000
Lighting Distance100-200 m
Wattage10
ChargerRechargeable (USB Type-C)
Is Batteries IncludedYes
WaterproofYes (IPX6)
Impact Resistance1m
Switch ModeHigh/Middle/Low
Support Dimmer5 - 8 Files
Focal LengthNon-adjustable
FunctionHard Light
Runtime (Moonlight)150H
Dimensions (L*W*H)69.3mm * 33.8mm * 20.4mm
Weight (with battery)69g
CertificationCCC, ce, FCC, ROHS
Flashlight Typecamping, hiking, searching, fishing, cycling, outdoor work

ANSI/NEMA FLI Chart

ANSI/NEMA FLI Chart for SOFIRN ST10 main light, side white light, and side red light.
Detailed table showing output (lumens), runtime (hours), distance (meters), and intensity (candela) for Moon, Low, Medium, High, Turbo, Beacon, and Flash modes across Main Light, Side White Light, and Side Red Light.
Diagram illustrating the 144 meters beam distance of the SOFIRN ST10 flashlight.
A visual representation of the ST10's beam distance, showing it can reach up to 144 meters.

User Tips

  • Versatile Carrying: The magnetic tailcap and clip allow for hands-free use, attaching to metal surfaces or clipping onto backpacks/clothing.
  • Battery Choice: While the included 14500 battery offers maximum brightness, AA Alkaline or Ni-MH batteries can be used as alternatives, though they may result in lower brightness.
  • EDC Essential: Its compact size and powerful output make it ideal for everyday carry in a backpack or pocket.
  • Red Light for Night Vision: Utilize the red light mode for night fishing, observation, or reading to preserve night adaptation.
  • Tint Variation: Be aware that LED tint can vary between units. If a specific tint is desired, check with the seller or consider LED swapping if experienced.
SOFIRN ST10 flashlight demonstrating hands-free use with magnetic mounting and clip.
Images showing the ST10 being attached to a backpack strap, a metal axe head, clipped to a chest strap, and hung by its lanyard, highlighting its versatile hands-free capabilities.
SOFIRN ST10 flashlight magnetically attached to a pole, illuminating a map.
A user attaches the ST10 magnetically to a pole to illuminate a map, demonstrating its practical use for hands-free lighting.
Man using SOFIRN ST10 red light for night fishing.
An image of a man using the ST10's red light feature while night fishing, emphasizing its utility for preserving night vision.

Warranty and Support

Sofirn products are manufactured to the highest quality standards. For warranty claims or technical support, please contact Sofirn customer service. A detailed user manual in PDF format is available for download from the product page or by contacting support.

For a comprehensive guide, please refer to the official user manual PDF: SOFIRN ST10 User Manual (PDF)


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