Sofirn SR20 MINI

Contents

Sofirn SR20 MINI Dual Color Flashlight

User Manual

Model: SR20 MINI | Brand: Sofirn

1. Introduction

The Sofirn SR20 MINI is a compact and versatile dual-color flashlight designed for various tasks, including night reading, wildlife observation, camping, hiking, and everyday carry (EDC). It features both powerful white light and night-vision-preserving red light, along with convenient USB-C charging and a magnetic tail cap.

Sofirn SR20 MINI flashlight illuminating a dark area

The Sofirn SR20 MINI providing 1200 lumens of white light over 142 meters.

2. Safety Information

  • Do not shine the flashlight directly into eyes.
  • Keep out of reach of children.
  • Ensure proper battery orientation during installation.
  • Do not disassemble the sealed head to avoid damage to the flashlight and voiding the warranty.
  • The flashlight may get warm during prolonged use on high modes. This is normal.

3. Package Contents

  • Sofirn SR20 MINI Flashlight
  • 18350 1100mAh Battery
  • USB-C Charging Cable
  • Lanyard
  • Spare O-rings
  • User Manual (this document and a printed version)
Sofirn SR20 MINI package contents including flashlight, battery, cable, and manual

Typical package contents for the SR20 MINI.

4. Specifications

Feature Detail
Emitter 3 * CSP2323 White LEDs, 3 * HFL1-R Red LEDs
Battery Option 1 × 18350 battery (1100mAh)
Working Voltage 3.0V-4.2V
Charging USB Type-C
Material AL6061-T6 aluminium alloy
Water Resistance IP68 waterproof
Size (Head Diameter x Length) 31.7mm x 80mm
Weight (without battery) 35g
Max Output (White Light) 1200 lumens
Max Beam Distance (White Light) 142 meters
Max Output (Red Light) 150 lumens
Max Beam Distance (Red Light) 28 meters
Diagram showing the dimensions of the Sofirn SR20 MINI flashlight: 31.7mm head diameter and 80mm length.

Dimensions of the SR20 MINI flashlight.

5. Setup

5.1 Battery Installation

  1. Unscrew the tail cap of the flashlight.
  2. Remove the insulating paper disk from the battery (if present).
  3. Insert the 18350 battery with the positive (+) end facing towards the flashlight head.
  4. Screw the tail cap back on tightly.
Image showing the Sofirn SR20 MINI flashlight with its tail cap unscrewed and battery being inserted.

Battery installation process.

5.2 Charging

The SR20 MINI features a USB Type-C charging port for convenient and fast charging. Connect the provided USB-C cable to the flashlight and a power source (e.g., USB wall adapter, computer USB port).

  • Power Indicator:
    • Green (Constant On): Battery level > 70%
    • Red (Constant On): Battery level 30%-70%
    • Red (Flashing): Battery level < 30%
Image showing the USB-C charging port and power indicator states (green, red, flashing red) on the Sofirn SR20 MINI flashlight.

USB-C charging port and power indicator details.

6. Operating Instructions

The SR20 MINI uses a single side switch for all operations.

6.1 From OFF

  • Long Press: Activates Moonlight Mode.
  • 1 Click: Activates Memory Mode (returns to the last used brightness level).
  • 2 Clicks (Unlocked): Activates Turbo mode.
  • 2 Clicks (Locked): Unlocks the flashlight.
  • 3 Clicks: Activates Strobe mode.
  • 4 Clicks: Toggles Lock/Unlock mode.

6.2 From ON

  • 1 Click: Turns OFF the flashlight.
  • Long Press (from White Light): Cycles through Low → Medium → High.
  • Long Press (from Red Light): Cycles through Low → Medium → High → Turbo.
  • 2 Clicks (from Red Light): Activates Flash mode → 3 Clicks → White Strobe.
  • 2 Clicks (from White Light): Activates Turbo mode → 2 Clicks → Strobe.
  • 3 Clicks: Toggles between Red Light and White Light.
User interface diagram for Sofirn SR20 MINI, showing button presses for different modes from OFF and ON states.

Detailed user interface for the SR20 MINI.

6.3 Lockout Mode

To prevent accidental activation, the SR20 MINI features a lockout mode. Click the switch 4 times from OFF to lock or unlock the flashlight.

Diagram illustrating the 4-click lockout mode for the Sofirn SR20 MINI flashlight.

Lockout mode prevents accidental activation.

6.4 White Light Modes and Runtimes

Mode Output Beam Distance Runtime
Moonlight 1lm 3m 460h
Low 10lm 20m 32h 50min
Medium 150lm 52m 4h 30min
High 500lm 96m 1h 30min
Turbo 1200lm → 500lm 142m 2min → 1h
Strobe 1200lm - 2h
Table showing white light modes, output, beam distance, and runtime for Sofirn SR20 MINI.

White light performance specifications.

6.5 Red Light Modes and Runtimes

Mode Output Beam Distance Runtime
Moonlight 1lm 3m 270h
Low 3lm 10m 44h 10min
Medium 40lm 15m 4h
High 70lm 19m 2h 10min
Turbo 150lm 28m 2h
Flash 0.5Hz 40lm - 8h
Table showing red light modes, output, beam distance, and runtime for Sofirn SR20 MINI.

Red light performance specifications.

7. Maintenance

  • Clean threads and O-rings regularly with a clean cloth. Lubricate O-rings with silicone grease to maintain water resistance.
  • If the flashlight is not used for an extended period, remove the battery to prevent leakage.
  • Charge the battery regularly, even if not in use, to prolong its lifespan.
  • Keep the charging port clean and free of debris.
Sofirn SR20 MINI flashlight submerged in water, demonstrating its IP68 waterproof rating.

The SR20 MINI is IP68 waterproof, but proper maintenance is still important.

8. Troubleshooting

  • Flashlight does not turn on:
    • Check if the battery is inserted correctly (positive end towards the head).
    • Ensure the tail cap is screwed on tightly.
    • The battery might be depleted; try charging it.
    • The flashlight might be in lockout mode; click 4 times to unlock.
  • Light is dim or flickers:
    • The battery might be low; charge it fully.
    • Clean the battery contacts and threads.
  • Charging not working:
    • Ensure the USB-C cable is properly connected to both the flashlight and the power source.
    • Try a different USB-C cable or power adapter.
    • Check the charging port for any obstructions.

9. User Tips

  • The SR20 MINI is praised for its compact size and powerful output, making it an excellent choice for everyday carry.
  • The beam profile is well-balanced, providing good illumination both indoors and outdoors without excessive hotspots or spill.
  • The 5700K white light offers a clean and neutral color temperature, free from noticeable color shifts.
  • The red light feature is particularly useful for preserving night vision during activities like wildlife observation or navigating in low-light conditions without disturbing others.
  • While durable and waterproof (IP68), the flashlight may become warm during extended use on its highest brightness settings.
  • The magnetic tail cap adds versatility, allowing you to attach the flashlight to metal surfaces for hands-free operation.
Sofirn SR20 MINI flashlight attached to a metal knife via its magnetic tail cap, demonstrating hands-free use.

Magnetic tail cap for hands-free convenience.

10. Video Overview

Watch this official video for a visual demonstration of the Sofirn SR20 MINI's features and operation.

Official product video showcasing the Sofirn SR20 MINI flashlight.

11. Warranty and Support

Sofirn products are manufactured to high-quality standards. For warranty claims, technical support, or any questions regarding your SR20 MINI flashlight, please contact Sofirn Official Store customer service. Please refer to the official Sofirn website or your purchase documentation for specific warranty terms and contact information.

A detailed user manual in PDF format is also available for download from the product page or by contacting customer support.

© 2023 Sofirn. All rights reserved.

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