Switches The round is for on/off, output selection; the side switches are for UVC light on/off. On/off Press and hold the round switch for 0.5 seconds to turn on/off the light. Output Selection With the light switched on, single click the round switch to cycle through Low→Med→High→Turbo. Strobe With the light switched on, press and hold the round switch for 1.2 seconds to enter Strobe, single click again to turn back to the previously used output level. With the light switched off, press and hold the round switch for 1.2 seconds to enter Strobe, single click to exit. Lock/Unlock Lock: with the light unlocked and switched off, double click the round switch to lock the light in 0.5 seconds, the light will blink twice on Low to indicate locked status. Unlock: with the light locked and switched off, double click the round switch in 0.5 seconds, the light will be unlocked and activated on Low. In locked status, clicking or pressing the switch will activate 2 one-second blinks on Low to indicate locked status. UVC Light With the light switched off, unscrew the protective cover to reveal the UVC light; and aim the object to be disinfected at a distance of about 2 cm. Simultaneously press the side switches to activate the disinfection function. Operation Cautions:

1. A disinfection cycle remains up to 30 seconds, after working for this time or releasing any UV switch, the UVC light will go out. Release the side switches and simultaneously press again for the reselection of the UVC light.
2. An extra blue indicator will be lit to indicate the effective disinfection range since the UVC light is invisible while working.
3. The UVC light is quite dangerous to human and animal cells. It is strictly prohibited to shine the UVC light into the eyes, human body and animal. This flashlight should be placed beyond the reach of children.
4. The intensity of UVC light will attenuate along with distance. Therefore the light should not be kept too far away from the surface of the disinfected object to avoid a poor disinfection effect. When disinfecting a large area, divide it into areas and disinfect them one by one.
5. After the protective cover is unscrewed, it can be screwed to the light tail to avoid loss. After using, the protective cover should be replaced to maintain the protective performance of the flashlight and avoid potential safety hazards caused by accidentally activating the UVC light.

Intelligent Memory Circuit The light memorizes the last selected output of general mode. When turned on again the previously used output of general mode will be recalled. Battery Specifications

Type	Dimensions	Nominal voltage	Usability
Fenix ARB-L18 Series	18650	3.6 V / 3.7V	Recommended	√√
Non-rechargeable Battery (Lithium)	CR123A	3V	Usable	√
Rechargeable Battery (LiFePO4)	16340	3.2V	Usable	√
Rechargeable Battery (LiFePO4)	18650	3.2V	Usable	√
Rechargeable Battery (Li-ion)	18650	3.6 V / 3.7V	Caution*	！
Rechargeable Battery (Li-ion)	16340	3.6 V / 3.7V	Banned	×

Warning: *18650 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care. Only use quality batteries with circuit protection will reduce the potential for combustion or explosion; but cell damage or short circuiting are potential risks the user assumes. Battery Replacement Unscrew the light head to insert the battery with the anode side (+) towards the light head, then screw the light head back on. Battery Level Indication With the light switched off, single click the side switch to check the battery status, the indicator will last for 3 seconds.

• Green light on: saturated 100% - 85%
• Green light flashes: sufficient 85% - 50%
• Red light on: poor 50% - 25%
• Red light flashes: critical 25% - 1%

Note: This only works with Fenix ARB-L18 Series 18650 rechargeable Li-ion battery. Intelligent Overheat Protection The light will accumulate a lot of heat when used on Turbo output level for extended periods. When the light reaches a temperature of 60°C or above, the light will automatically step down a few lumens to reduce the temperature. When the temperature drops below 60°C, it will then allow the user for the reselection of Turbo mode. Low-voltage Warning When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output mode, the battery level indicator blinks red to remind you to timely recharge or replace the battery. Note: This only works with Fenix ARB-L18 18650 Li-ion battery. Usage and Maintenance

• Disassembling the sealed head can cause damage to the light and will void the warranty.
• Fenix recommends using an excellent quality battery.
• If the light will not be used for an extended period, remove the battery, or the light could be damaged by electrolyte leakage or battery explosion.
• Lock the light or remove the battery to prevent accidental activation during storage or transportation.
• Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare．
• Periodic cleaning of the battery contacts improves the lamp's performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons: A: The battery needs replacing. Solution: Replace battery pack / battery (Ensure battery is inserted according to the manufacturer’s specifications). B: The threads, PCB board contact or other contacts are dirty. Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.

If the above methods don't work, please contact your authorized distributor. Warning

• This flashlight is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the flashlight directly into anyone's eyes.
• This flashlight will accumulate a lot of heat when used for extended periods, resulting in high temperature of the flashlight shell. Pay attention to safe use to avoid scalding.
• The UVC light is quite dangerous to human and animal cells. It is strictly prohibited to shine the UVC light into the eyes, human body and animal. This flashlight should be placed beyond the reach of children.
• All information provided in this manual is subject to change without prior notice.