Pressure pad switch for remote activation of the 445nm assembled units based on the S4 and stainless steel hosts. Includes a coiled cord with a flat-sided pad for easy mounting. Use a small piece of self-adhesive Velcro (supplied) on the switch and mounting surface for removable applications. Multiple switches on the pressure pad allow for both continuous and momentary "on" modes. Note: The switch electronics will reduce optical output by about 15%. Note: This version does NOT work with currently-shipping Survival Laser-branded flashlights, our red parts bundles, and may not work with other C6 host flashlights. Warning: When using for remote illumination, it is recommended to always defocus the lens to produce a spot approximately 3 feet (1 meter) wide at the target.