There is also an “intelligent brightness downshifting sensor” that automatically lowers the output if something comes close to the lens (around 60mm) for more than 1.5 sec The flashlight will accumulate a lot of heat when used on High mode 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 the reselection of High mode.

With the light switched on, press and hold the spotlight switch for 1.2 seconds to simultaneously turn off both modes. Mode Switching The light features 3 individual modes controlled by a rotary toggle switch. These are: Distance beam, floodlight beam, and combined distance / floodlight beam. Simply rotate the toggle switch to the required mode to select it, then use the central push button to cycle brightness levels. Holding the button down for 1.2 seconds on any mode will activate mode 4, Strobe and SOS. The Fenix LR40R V2.0 is fairly unique in the dual-channel aspect. Over the past year or so I’ve noticed a handful of lights offering both Spotlight and Floodlight modes, though it’s still not something that I would consider to be common. The Fenix achieves this with a large central reflector that houses a Luminus SFT70 LED. It’s the “big brother” to the more common SFT40. These are domeless emitters that put out a lot of concentrated light.The lamp will accumulate a lot of heat when used at relatively high output levels for extended periods. When the lamp reaches a temperature of 60°C or above, the lamp will automatically step down a few lumens to reduce the temperature.

Do NOT shineflammableobjects at close range, to avoid burning objects or causing danger due to high temperature!Spot and floodlight both switched on (High output on Spotlight mode), the light will downshift to 1000 lumens; Do NOT use the light in inappropriate ways such as biting in the mouth, to avoid personal injury or life threats when the light or internal battery fails! With the light switched on High I, High II or Turbo on Floodlight mode, the light will accumulate a lot of heat for extended periods. When the light reaches a temperature of 65℃ or above:

When charging, the charging indicators will flash from left to right to display charging status. The five indicators will be constant-on after charging is complete. The light and the included charging cable support QC2.0, PD2.0 fast charging protocols.The normal charging time is approximately 4 hours from depletion to full charging. Spot and floodlight both switched on (no High output on Spotlight mode), the light will downshift to 1500 lumens.By and large, my runtime observations line up well with Fenix’s claims. Note that once the output dropped down to its lowest level (around 64 lumens), it kept chugging along for hours and hours until I finally stopped the tests. Peak beam intensity and beam distance measurements About Peak beam intensity: Understanding ANSI FL1 Standards About peak beam intensity The calculated value of distance in meters at which the flashlight produces a light intensity of 0.25 lux. (0.25 lux is about the brightness of a full moon shining on an object). This means that the intensity has decreased so much, it becomes difficult to see darker objects, or objects that don’t reflect light. The columns ‘Meters’ and ‘Yards’ use rounded numbers.