Bolt-On Run/Stop Button for Pixboom Spark is designed specifically for Pixboom Spark cameras and SPARK Power IO boxes, using the 9-pin EXT port with a re-keyed keyway so DC-in, USB-C, and HDMI connectors stay unobstructed. It lets you mount a record trigger exactly where you need it, whether on a handle, shoulder rig, or up to 250 feet away via standard 1/8" (3.5 mm) headphone extension cable, and includes a 1/4-20 mounting screw and Allen key.