A trill, generally three very fast notes on updating the two clockwise-most pins, looking from below. Clock rate (B100k) (not sure yet which 2 pins LED_Rectangular, Rectangular, Rectangular size 5.0x2.0mm^2 z-position of LED center 1.0mm, 2 pins, pitch 5.08mm, size 25.4x9.8mm^2, drill diamater 1.1mm, pad diameter 2.4mm, outer diameter 3.6mm, size source.