@ocanoperez @hisdoc1 @hisbundlepacing @mdhuang @ryan33035613 @drrodericktung @kvernooy @marek_jastrz_ep @drpmoskal @rdschaller @sergiopinski @narrowqrs @gauravaupadhyay @gopi_gdanda1 @psharmadoc why 3 wires? is it for cs lead? or ?