Klarus TRS1 Multi-Function Remote Pressure Switch for the Klarus XT11S Tactical LED Flashlight The Klarus TRS1 is a multi-function remote pressure switch that is designed specifically for the Klarus XT11S tactical flashlight It features dual switches, a momentary-on function, and provides multiple outputs like the XT11S The TRS1 has an 8 inch cable which integrates with most rifle/carbine applications The dual switch is encased in a high-grade waterproof silicone for durability The tail cap is constructed from aircraft grade aluminum with Military III hard anodic oxidation