NITECORE DL20 Diving Light User Manual

: June 9, 2024
: Nitecore

Table of Contents

DL20 Diving Light
Features
Specifications
Technical Data
Operating Instructions
Maintenance
References
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DL20 Diving Light
User Manual

DL20 Diving Light

Outstanding Waterproof Performance

Warranty Service
All NITECORE® products are warranted for quality. DOA/defective products can be exchanged for replacement through a local distributor/dealer within the 15 days of purchase. After 15 days, all defective / malfunctioning NITECORE® products will be repaired free of charge for a period of 60 months from the date of purchase. After 60 months, a limited warranty applies, covering the cost of labor and maintenance, but not the cost of accessories or replacement parts.
The warranty is nullified in all of the following situations:

The product(s) is/are broken down, reconstructed and/or modified by unauthorized parties.
The product(s) is/are damaged through improper use.
The product(s) is/are damaged by leakage of batteries. For the latest information on NITECORE® products and services, please contact your national NITECORE®
distributor or send an email to service@nitecore.com

※ The NITECORE official website shall prevail in case of any product data changes.

Features

A diving light specially designed for underwater activities
Utilizes a CREE XP-L HI V3 LED to emit a max output of 1,000 lumens
Integrated red light serves as an auxiliary light supplement for underwater photography
Crystal Coating Technology combined with “Precision Digital Optics Technology” for extreme reflector performance
Max beam intensity up to 12,400cd and beam distance up to 223 meters
High efficient constant current circuit board provides max runtime of 9 hours
Reverse polarity protection
Toughened ultra-clear mineral glass with anti-scratch coating
Constructed from aero grade aluminum alloy with HAIII military grade hard-anodized finish
In accordance with IPX8 and 100 meters submersible
Impact resistance up to 1 meter
Tail stand capability

Specifications

Length:	133.1mm (5.24”)
Head Diameter:	34mm (1.34”)
Tail Diameter:	25.4mm (1”)
Weight:	135.5g (4.78oz) (Batteries Not Included)

Accessories
Lanyard, Spare O Ring×4
Battery Options

| Type| Nominal Voltage| Compatibility
---|---|---|---
18650 Rechargeable Li-ion Battery| 18650| 3.6V/3.7V| Y (Recommended)
Primary Lithium Battery| CR123| 3V| Y (Recommended)
Rechargeable Li-ionBattery| RCR123| 3.6V/3.7V| Y (Recommended)

Technical Data

FL1 STANDARD| White Light| Red Light| White Light Strobe
---|---|---|---
High| Low| High| Low
| 1000 Lumens| 385 Lumens| 115 Lumens| 55 Lumens| 1000 Lumens
| *1h15min| 4h| 4h15min| 9h| /
| 223m| 148m| 25m| 18m| /
| 12400cd| 5500cd| 160cd| 77cd| /
| lm (Impact Resistance)
| IPX8, 100m (waterproof and submersible)

NOTE: The above data has been measured in accordance with the international flashlight testing standards ANSI/NEMA FL1, using 1 x 18650battery (3,400mAh) under laboratory conditions. The data may vary in realworld use due to different battery use or environmental conditions. * The runtime for High Mode of White Light is the esting
result before starting temperature regulation.

Operating Instructions

Battery Installation
Insert battery with the positive poles pointingforward as illustrated in the diagram.
Warning:

Ensure batteries are inserted with the positive (+) end pointing to the head. The DL20 will not operate with incorrectly inserted batteries.
Avoid direct eye exposure.
When the DL20 is kept in a backpack or left unused for extended periods of time, NITECORE recommends to remove all batteries to prevent accidental activation of the flashlight or battery leakage.

ON/OFF
Turn on: Long press switch 1 to enter the high mode of the white light. Long press switch 2 to turn on the red light. White light and red light can be turned on simultaneously.
Turn off: When the white light is on, long press switch 1 to turn the white light off; and when the red light is on, long press switch 2 to turn the red light off.
Brightness Levels
White Light: Two brightness levels selectable. When the white light is on, tapping the switch 1 to change the brightness.
Red Light: Two brightness levels selectable. When the red light is on, tap switch 2 to change the brightness.
Special Mode (White Light Strobe)
Whether the DL20 is on or off, long press switch 1 and switch 2 simultaneously to enter strobe mode. Tap any switch to exit and return to the previously used mode.
ATR(Advanced Temperature Regulation)
With Advanced Temperature Regulation module, the DL20 regulates its output and adapts to the ambient environment, maintaining optimal performance.
Replacing Battery
Batteries should be replaced when the following occurs: The white LED blinks quickly for 2 seconds and automatically lowers its output.
NOTE: Please ensure the surface of the light is dry before taking the battery out for replacement.