The Terralux TT-4 Tactical 520 Lumens Flash Light, Grey build flashlights that deliver rugged, reliable and professional results for tactical, military and law enforcement applications. The core competency of TerraLUX lies in its ability to converge the disciplines of electrical, optical, mechanical, thermal and manufacturing expertise to deliver some the highest performing LED light modules in the industry in a very cost effective manner. A key enabling technology is TerraLUX's patented LED Sense Thermal Management circuitry. These Terralux TT-4 Tactical 520 Lumens Flash Lights actively sample the temperature of the LEDs in a TerraLUX light module, and respond as required by making adjustments to the LED drive conditions. The Terralux TT-4 LED Tactical Flashlight 520 Lumens is made from aircraft-grade aluminum and designed to perform in a high duty cycle environments. TerraLUX scientists and engineers continue to develop new, novel, and patentable technologies in solid-state lighting, such as Terralux TT 4 Tactical LED Grey Flashlights assuring a prosperous future for the company as well as innovative solutions that keep TerraLUX customers ahead of the competition.