This is the highest output LED tower cluster available for marine use. It uses 18 surface mount (SMD) LEDs arrayed in 6 planes for 360° visibility. Proprietary PWM Constant-Current chipset results in high performance across the entire 10-30VDC range. Choose the cool white model for masthead (anchor light) and stern lamp applications. Choose the full spectrum warm white model for red, green, or tri-color running lights. Both versions fit in fixtures that use a BAY15d bulb (double contact, offset pins).
 
ILTW1157-SMC
Tower Navigation Bayonet (back-entry) LED Replacement Bulb, Cool White, 10-30VDC (3.0W), Omni-Directional, BAY15d Socket
 
ILTW1157-SMW
Tower Navigation Bayonet (back-entry) LED Replacement Bulb,Warm White, 10-30VDC (3.0W), Omni-Directional, BAY15d Socket