S-Probe, 8ch, 15µm elect dia, 100µm electrode spacing, 130mm total length(30mm; 460µm dia reinforcement tube); 210µm probe dia; CON/16025-18p connector interface; 540µm tip to 1st site; Optic Fiber between channels 2 and 3 and between channels 7 and 8; Optic Fiber between channels 2 and 3 not working.