Sofirn SD09 - User Manual

Need help?

Do you have a question about the Sofirn SD09 and is the answer not in the manual?

Summary

Sofirn SD09 Flashlight Features

Automatic Lockout Feature

When the flashlight turns off after 1 minute, it automatically enters lockout mode. Double-click the switch to unlock.

Product Specifications

General Specifications

Details on emitter, operating voltage, battery, size, weight, body material, lens, water resistance, and standby current.

Operational Features

Includes mode memory, reverse polarity protection, and low voltage warning indicators.

Operating the Sofirn SD09

Battery Installation and Level Indicator

Instructions for battery installation and understanding the LED power status indicator.

Core Operation Functions

Covers turning the light on/off, changing brightness levels, accessing strobe mode, and lock/unlock functions.

Safety and Maintenance

Essential Safety Instructions

Guidance on safe handling, avoiding direct eye exposure, and precautions for high-power modes and transport.

Troubleshooting Common Issues

Addresses problems like battery replacement, dirty contacts, and initial startup issues with potential solutions.

Overview

Function Description
Important Technical Specifications
ANSI/NEMA FL1 Chart (using a 4,000mAh 21700 Li-ion battery)
Usage Features
Maintenance Features

The Sofirn SD09 is a compact and powerful diving flashlight designed for underwater exploration and deep-sea diving, capable of functioning at depths of up to 100m. It is a smaller and more portable version compared to the SD09L, utilizing a single 21700 battery.

Function Description:

The flashlight provides an astounding 3400 lumens of bright light, making it suitable for illuminating the depths of the ocean. It features multiple brightness levels (Low, Medium, High) and a Strobe mode for various lighting needs. An automatic lockout feature enhances safety and prevents accidental activation; the flashlight automatically enters lockout mode after 1 minute of being turned off, requiring a double-click to unlock.

Important Technical Specifications:

Emitter: 3 * LUMINUS SST-40 LEDs with a lifespan of 50,000 hours.
Operating Voltage: 3V – 4.2V.
Battery Options: 1x 21700 rechargeable lithium-ion battery.
Dimensions: 48 mm (head diameter) × 26 mm (body diameter) × 142.6 mm (length).
Weight: 203 grams (without battery).
Flashlight Body: A6061-T6 aluminum alloy.
Lens: Toughened mineral glass lens.
Water Resistance: IPX8 (capable of functioning at depths up to 100m).
Driver: Boost driver.
Standby Current: ≤30uA.
Mode Memory: The light memorizes the last brightness level used (Low/Med/High).
Reverse Polarity Protection: Prevents damage from improper battery installation.
Low Voltage Warning: When the battery voltage drops below 2.8V, the LED indicator flashes red, signaling the need for recharging or battery replacement.

ANSI/NEMA FL1 Chart (using a 4,000mAh 21700 Li-ion battery):

Mode	Runtime [h]	Beam Distance [m]	Peak Intensity [cd]	Luminous Flux [lm]
Low	9	140	1433	500
Medium	4.75	235	13783	1200
High	2.25	375	35100	3400
Strobe	-	-	-	3400

Impact Resistance: 1m / 3.28 ft.

Usage Features:

Battery Installation: Before first use, remove the insulating sticker from the tail cap. Ensure the positive end of the new battery faces the flashlight's head when inserting.
Battery Level Indicator: The indicator displays power status for 5 seconds after turning on:
- Green: 75%-100% remaining battery power.
- Flashing Green: 50%-75% remaining battery power.
- Red: 25%-50% remaining battery power.
- Flashing Red: Critical power (less than 25%), requiring immediate replacement or recharge.
ON/OFF: Press and hold the switch to turn the light on or off.
Change Brightness Level: While the flashlight is on, single-click the switch to cycle through Low, Medium, and High modes. The mode is selected upon switch release.
Direct Access to Strobe Mode: From any state (on/off, not in lock mode), quickly double-click the switch to activate Strobe. Single-click again to return to the previously used mode.
Lock/Unlock: When the flashlight is off, double-click the switch to lock it. The LED blinks twice to confirm lock mode. Double-click again to unlock and return to the previously used mode. While locked, holding the switch provides momentary-low light, and the LED flashes twice if other operations are attempted.
Safety Precautions:
- Avoid pointing the flashlight directly at people, animals, or moving vehicles to prevent retinal damage.
- Keep out of reach of children. Strobe mode may trigger seizures in individuals with photosensitive epilepsy.
- The flashlight may heat up quickly during prolonged use in high-powered modes, which is normal.
- Always ensure correct battery orientation (positive end towards the head).
- Unscrew the tailcap by half a turn during transport or storage to prevent accidental activation and battery drain.
- Avoid hitting or dropping the flashlight.

Maintenance Features:

Disassembly: Disassembling the sealed head can damage the flashlight and voids the warranty.
Battery Quality: Sofirn, Ltd. recommends using high-quality brand batteries. Damage from battery leakage voids the warranty.
Long-Term Storage: Remove the battery if the flashlight will not be used for an extended period.
Prevent Self-Discharge/Accidental Activation: Unscrew the tailcap by half a turn or remove the battery during storage or transportation.
Thread Lubrication: Every 6 months, wipe threads with a clean cloth and apply a thin layer of silicone grease.
Waterproofness: Replace worn-out O-rings with approved spares to maintain water resistance.
Troubleshooting:
- Dirty Contacts: Regularly clean battery contacts, as dirt can impair performance. If experiencing flicker, intermittent shine, or failure to turn on, clean contact points with a cotton swab soaked in rubbing alcohol.
- Battery Replacement: If the battery needs replacement, use an approved type of a fully charged battery.
- First Use: If the flashlight does not turn on upon first use, ensure the insulation sticker has been removed from the battery.
Warranty: Refer to the warranty policy for support if troubleshooting steps do not resolve issues. Contact Sofirn at us@sofirnlight.com, eu@sofirnlight.com, or wholesale@sofirn.cn for assistance or replacements within the warranty period.