Replacement LED – Three-Chip Bayonet Style (Loading Dock Light Bulb)

P/N: ALC-1156-3UHUP-R (First Generation)

P/N: ALC-1156-3UHUP-G (First Generation)

Note: This first-generation LED has the original bayonet-style base and identical appearance to the LED many customers already have. It does not fit into the newer hinged light box design.

Alert Lighting Company manufactures part numbers ALC-1156-3UHUP-R and ALC-1156-3UHUP-G as direct replacements for our early ALC-1156 series. These three-chip LEDs provide the same look, base, and socket connection as the original models, making them the perfect option for customers who want the same style and fit.

For hinged light box applications, see the Universal Replacement LED (ALC-1156-3UHUP-12-24VDC-1156B(N).

Want a Deal?

Call 262-895-6349 or email sales@alertlightingco.com. Use your UPS account for shipping or ask about bulk order discounts — we’re happy to help you save.

Benefits

• Built with Cree LED diodes for maximum brightness and reliability
• Three-chip LED with a matching bayonet base and socket with wires
• Maintenance-free and designed for long service life
• Expected lifespan: 10–15 years (5-Year Warranty)
• Internal circuits protect from electrical surges
• Operates on 12–24VDC
• Available in Red and Green

Compatibility

• Same bayonet base and connection as original ALC-1156 LEDs
• Direct drop-in replacement for existing non-hinged dock lights
• Not compatible with smaller hinged light boxes — use the universal replacement instead

Environmental Benefits

• Low-energy design reduces electricity costs and carbon emissions
• No mercury or hazardous materials, fully recyclable
• Directional lighting reduces glare and light pollution
• No UV output, protects surrounding materials and surfaces

Summary: The three-chip bayonet-style replacement LED is ideal for customers who want the same look and fit as their original first-generation ALC-1156 LEDs. For hinged light box models, order the Universal Replacement LED.