Bulbs have two filaments, which operate at different brightness levels.

Bulbs have two filaments, which operate at different brightness levels.

These miniature bulbs are sized to fit older telephone switchboards, signs, instruments, and indicators.

Fit these bulbs in tight spaces such as signs, control panels, indicators, and flashlights.

Wire terminals allow you to connect these bulbs to a power source through a panel.

Pins on the base lock these bulbs into sockets to withstand vibration. They're often used in machines and elevators.