The lighthouse, (145 steps) built in 1950, uses a xenon arch lamp. Its light range varies from 200 m (in very thick fog) to 120 km (on nice days). From the tower gallery, one can see Bréhat Island to the East, Jersey to the North, Granville, part of Cotentin and the Island of Chayset to the North East. On misty days, at 400 m from the lighthouse, a siren produces a set of two sounds every minute.