The original apparatus was a first order catoptric lens, and the light source was a kerosene lamp. Also built with the lighthouse was a sandstone keeper's cottage, also designed by Dawson. A second cottage was constructed in 1860, and two rooms were added to each of the cottages in 1877. The cottages were connected to the city water only in 1897, using stored waters until then. In 1904 the light was upgraded to incandescent gas, In 1933 the light was electrified, and the lighthouse was automated and demanned. In 1948 a Chance Brothers catadioptric lens was installed, and the light characteristic was changed to a rhythmic light.