BA15S type LED bulbs are replacement bulbs for any BA15S fixture. These are SINGLE contact type bulbs for replacement and spare parts for our LD-52xx series LED stacklights. These are also compatible with hundreds of existing incandescent bulb base fixtures that use BA15S bayonet base single contact.
The 24VDC bulbss are used on 24 VDC Continuous, 24 VDC Flashing, and the 120VAC Flashing Stack Lights (LD-522X-100, LD-522X-101, LD521X-101)
The 120VAC bulbs are used on the 120 VAC Continuous Stack Lights (LD-521X-100)
