SOFIRN BLF LT1 LED Camping Light User Manual

Introduction

The SOFIRN BLF LT1 is a versatile LED camping light designed for various outdoor and indoor lighting needs. It features adjustable tint, multiple user interfaces, and a power bank function, making it an ideal companion for camping, hiking, working, or emergency situations. This manual provides detailed instructions for its setup, operation, maintenance, and troubleshooting.

Setup

Initial Preparation

1. Unscrew the body: Before first use, carefully unscrew the body of the lantern.
2. Remove insulation paper: Locate and remove the round insulating paper from inside the battery compartment.
3. Reassemble: Screw the body back on tightly.

Battery Installation

The LT1 uses four button-top 18650 batteries with a maximum length of 70 mm and a maximum diameter of 19 mm. Batteries are included with the kit version.

1. Unscrew the body of the lantern.
2. Insert the batteries with the anode side (+) towards the light's head/LED.
3. Screw the tail cap back on securely.

After installing the batteries and tightening the parts together, the light should quickly blink once to confirm it has power and is now operational.

Operating Instructions

The LT1 lantern features the Andúril 2.0 firmware, offering both simple and advanced user interfaces. By default, it is set to SMOOTH RAMPING mode.

Button Presses Notation

• 1C: One click (Press and quickly release).
• 1H: Hold (Press and keep holding).
• 2C: Two clicks (Press and release quickly, twice).
• 2H: Click, hold (Click once, then press and hold the second click).
• 3C: Three clicks (Press and release quickly, three times).
• 3H: Click, click, hold (Click twice, then press and hold the third click).
• This pattern extends to higher numbers (e.g., 10C for ten clicks, 10H for ten clicks with the last one held).

Andúril Simple UI

The Simple UI provides basic functionality, limiting brightness and blocking complex features for ease of use.

• 1C: Turn On/Off.
• 1H: Ramp up (or down, if button was released less than a second ago).
• 2H (light on): Ramp down.
• 2H (light off): Momentary high mode.
• 2C: Double click to go to/from highest safe level.
• 4C: Lockout mode.

Other functions (light off):

• 3C: Battery check mode (displays voltage once, then turns off).
• 4C: Lockout mode.
• 10H: Switch to Advanced UI.
• 15C or more: Version check.

In Lockout mode (Simple UI):

• 1H: Momentary moon.
• 2H: Momentary low.
• 4C: Unlock and turn on.
• 4H: Unlock and turn on at low level.
• 5C: Unlock and turn on at high level.

Andúril Advanced UI

The Advanced UI unlocks all features and customizations. It is recommended to refer to the full UI diagram for a complete understanding.

To switch between Simple UI and Advanced UI:

• From Simple UI (light off): 10H to go to Advanced UI.
• From Advanced UI (light off): 10C to go to Simple UI.
• From Advanced UI (light off): 10H to configure Simple UI.

Default UI: Smooth Ramping

• Provides smooth dimming between the lowest (FLOOR) and highest (CEILING) brightness levels.
• Turn ON: Single-click the button. The LT1 turns ON using the previously used light output level (MEM).
• Ramp up & down: Hold the button to make it brighter. Release briefly and hold again to make it dimmer.
• Turbo: Double-click (light on or off) to activate Turbo for maximum brightness.
• Moon: Press & hold the switch. It turns on at the moonlight (FLOOR) level. A subtle "blink" provides a timing hint. If you keep holding, it ramps up.
• Battery check: While light is OFF, triple-click to show battery voltage (e.g., 3 blinks, pause, 8 blinks = 3.8 V).
• Turn OFF: Single-click.

UI: Stepped Ramping

This UI steps through discrete brightness levels instead of smooth ramping.

• Switch to Stepped Ramping: While the light is ON, click 3 times. (Note: 3 clicks from OFF engages battery check).
• All other operations are the same as in Smooth Ramping.

UI: Momentary Mode

Locks the flashlight into a single-mode interface where LEDs are only on when the button is held down, useful for Morse code or signaling.

• Enter Momentary Mode: 5 clicks from OFF.
• Exit Momentary Mode: Physically disconnect power (unscrew the light).
• Brightness is the last-ramped level; adjust before entering this mode.

UI: Electronic Lockout

Prevents accidental activation and provides a momentary low light option.

• Enable/Disable Lockout: 4 clicks from OFF.
• In Lockout mode, a momentary low light (moonlight) is available when the button is pushed.

Blinkies & Strobes

The LT1 includes various blinky and strobe modes for different situations.

• Access Blinkies: 3C from OFF.
• Access Strobes: 3H from OFF.
• Change to next mode: Double-click.
• Adjustments (Strobes): Hold to increase brightness or strobe faster (except Lightning). Click, hold to reduce brightness or strobe slower (except Lightning).

Blinky Modes:

• BattCheck: Shows remaining charge in volts (e.g., 4 blinks, pause, 1 blink = 4.1 Volt).
• Sunset: Starts at a low level, dims to moon for an hour, then shuts off.
• Beacon: Blinks at a slow speed (once every N seconds). Brightness is the last ramped level. Configure N by clicking 4 times to enter config mode, then click to set the number of seconds per blink.
• TempCheck: Blinks out current temperature in degrees C (e.g., 3 blinks, pause, 4 blinks = 34°C).

Strobe Modes:

• Candle mode: Simulates a flickering candle or fireplace. Each triple click adds 30 min to a timer (up to 4.5 hours).
• Bike flasher: Steady output with a "stutter" once per second. Adjustable brightness.
• Party strobe: Motion-freezing strobe. Adjustable speed.
• Tactical strobe: Bright, disorienting strobe. Adjustable speed, 33% duty cycle.
• Lightning storm mode: Flashes at random brightness and speed to simulate lightning strikes.

Thermal Configuration

To calibrate the temperature sensor and set the thermal limit:

1. Turn off the light and let it settle to room temperature.
2. Go to TempCheck (3C from OFF).
3. Click 4 times to enter thermal config mode.
4. Current temperature Calibration: Click once per degree C to calibrate (e.g., for 21°C, click 21 times).
5. Temperature limit: Click once per degree C above 30 to set the maximum temperature (e.g., for 50°C, click 20 times). Default is 45°C (15 clicks). The lowest settable value is 31°C.

Switch LED Configuration

The switch LED can be configured for different behaviors when the main emitters are off, indicating the light's status (locked or unlocked).

• Modes: Off, Low, High, Blinking.
• Configure in OFF mode: 7 clicks to cycle through Low-High-Blinking-OFF.
• Configure in LOCKOUT mode: 3 clicks to cycle through Blinking-OFF-Low-High.
• When the flashlight is on, the switch LED stays on. It goes to High for higher lumens and Low for lower lumens.

Charging and Power Bank Function

The LT1 lantern features an integrated USB-C charging port and can also function as a power bank.

Charging the LT1

• Connect the provided USB-C charging cable to the lantern's USB-C port.
• Use a quality USB power adapter (5V / 2A-3A recommended).
• While charging, the LT1's switch glows BLUE.
• When charging is finished, the switch remains steady BLUE.
• After unplugging, the switch glows steady ORANGE, indicating sufficient power.
• The lantern can also be operated without batteries by directly attaching it to a USB power adapter.
• This product requires a USB-A to USB-C cable for charging (included), but also works with your Type-C Charger and C-C charging cable (neither included).

Power Bank Feature

The LT1 can charge your mobile devices (e.g., phone, camera, GPS) via its USB-C port, providing 5V / 2A-3A maximum power supply.

• Connect your device to the LT1's USB-C port using an appropriate cable.
• If the power level in the LT1 is too low, it will stop outputting power.

Maintenance

• Disassembly: Disassembling the sealed head can cause damage to the light and void the warranty.
• Battery Storage: If the flashlight will not be used for an extended period, remove the batteries to prevent electrolyte leakage or battery explosion.
• Accidental Activation: To prevent accidental activation during storage or transportation, unscrew the tail cap one-half turn or remove the battery.
• Thread Care: Clean the threads every 6 months with a cleaning cloth. Applying silicone grease to the threads is recommended.
• O-ring Maintenance: Long-term usage can lead to O-ring wear. Replace worn O-rings with an approved spare to maintain a proper water seal.
• Contact Cleaning: Periodic cleaning of battery contacts improves performance. Dirty contacts can cause flickering, intermittent light, or failure to illuminate. Clean contact points with a cotton swab soaked in rubbing alcohol.

Troubleshooting (FAQ)

Q: Why won't the item work without plug?

A: Unscrew the body and remove the round insulating paper, then screw it back and try clicking again.

Q: Why does the item flash improperly?

A: Unscrew the tube, clean the contacts with a clean cloth and alcohol, then screw it back tightly again.

Q: The light flickers or fails to illuminate.

A: This could be due to a need for battery replacement or dirty contacts. Replace the battery if necessary. Ensure correct battery installation. Clean the threads, PCB board contact, or other contacts if they are dirty.

Specifications

Safety Precautions

• Batteries: Use only reputable 18650 cells of known origin. Quality button-top cells are recommended. The extraordinary energy density of 18650 cells means hazardous conditions can arise if a cell is short-circuited or damaged. Always treat cells with respect and properly dispose of damaged cells.
• Heat: When operating at higher output levels, the head of the lantern will heat up. This is normal. In warmer ambient conditions, the temperature may exceed 50°C. Take necessary precautions when handling the lamp under such conditions.
• Lightning Storm Mode: Do not look directly at the flashlight when Lightning Storm mode is running, as it may suddenly go to full power without warning.

User Tips

• The LT1 is highly praised for its long runtime and adjustable white light temperature, making it versatile for various environments.
• Many users appreciate the included batteries (in kit versions) and the overall build quality.
• The power bank feature is a convenient addition for charging other devices on the go.
• The Andúril 2.0 UI offers extensive customization; take time to explore its features for optimal use.
• Consider the LT1 as a reliable lighting solution for both everyday use and emergency situations, including power outages.

Warranty and Support

For any questions or if your product is defective, please contact Sofirn Limited for refund or replacement within warranty.

• Website: www.sofirnlight.com
• Email (Amazon US): us@sofirnlight.com
• Email (Amazon EU): eu@sofirnlight.com
• Email (Wholesale): wholesale@sofirn.cn
• Phone: +86-755-23440047
• Fax: +86-755-23440141

The product uses copyrighted code released under the GNU Public License v3 (GPLv3). For exact source code, visit https://tiny.cc/TKAnduril.

A detailed user manual in PDF format is available for download: User Manual (PDF)

Manufacturer: Shenzhenshi Jinba Technology Co., Ltd

Address: 1/F to 9/F, 1st Building, NO.110 Tenglong Industrial Center, Guanlan Street, Longhua New District, Shenzhen 518000, China