Did you know that the human eye can only perceive light within a wave spectrum of 380 to 780 nm? Longer-wave light remains hidden to us. But just to us. Red deer, roe deer, boar and foxes are far more reactive to infrared light. Particularly with laser-based IR lamps, there have recently been more and more undesired reactions from game. The reason for this is the smaller emission source that lasers have, which increases the risk of two light particles colliding. This results in visible flashes of light that game can perceive. LED-based IR lamps should thus operate at a minimum of 850 nm and laser-based ones at a minimum of 900 nm to ensure that they cannot be seen by game. This is where the PHÖNIX FOCUS ULTRA really demonstrates the strength of its LED technology. Its larger emission source, in combination with a working range of 875 nm, is effective at preventing a reaction by game.