(A) T3402M - Triode™  electrode, with standard 2cm spacing of silver silver chloride electrodes, backed with nickel plated brass snaps to prevent corrosion when connected to pre-amplifiers for extended periods.

(B) T3425 - UniGel electrodes, pre gelled single electrodes, or sensitive placements on dry skin. It can be used in place of T3404 single strip electrodes.