The Fenix AER-04 remote pressure switch is a professional-grade tactical accessory specifically designed for Fenix flashlights powered by 21700 batteries. Engineered for reliability in demanding environments, the tail adapter is crafted from durable A6061-T6 aluminum with a type III hard-anodized finish. The dual-switch panel features a silent forward switch for momentary-on activation and a dedicated tape switch for constant-on illumination. Its innovative, silent design and included Velcro mounting system make it an essential tool for tactical missions, hunting, and outdoor security operations.