When the lighthouse was electrified, it allowed a more automatic method of bell ringing. The electric solenoid in the base of the bell support was timed to strike the bell on an interval. The only job required by the keeper, by this time a Coast Guardsman, was to turn it on when fog rolled in. It could even be controlled by remote control, so a keeper was no longer needed. This system was used for a number of years until the modern electro-acoustic "hooters" entered service.

Spring Point Ledge Light now has two electronic fog signals (below, right) controlled by an automatic fog detector (below) which issues a strobe flash every second. A sensor in the unit reads the amount of light reflected back by the atmosphere. When the light reflected back reaches a certain level, the fog signals are activated. This system works in both daylight and darkness and is effective in snow and rain, as well as fog. Because of their cylindrical shape, the electronic fog signals are jokingly called "R2D2."

The bell on the lighthouse's top gallery is the original bell, which was cast in Boston in 1887, making it older than the lighthouse.

The old and the new (above). The original fog bell on the right is now displayed on the upper gallery of the lighthouse. In the background is one of the two new electronic fog signals currently in use at Spring Point.

At left is the fog sensor mounted through the wall of the watch room that turns on the signal when visibility falls below a certain level.