MarineBeam
Dusk to Dawn Anchor Bulb
Dusk to Dawn Anchor Bulb
SKU:TW-1157-DD
Marine LED replacement lighting. Match the exact base or pin layout, system voltage, light color, and available lens clearance before ordering.
See fit checks and full product specificationsCouldn't load pickup availability
- Ships in 1–5 business days
- 30-day returns
- Advice from real cruisers
This is our automatic photocell daylight sensing replacement LED bulb, which automatically comes on at dusk, and turns off again at dawn. It is a drop in replacement for your existing Aqua Signal, Hella, Perko or other anchor light or tri-color housing with a BAY15D bayonet base (double-contact, offset pins) socket.
No extra sensors, wires, or switches needed. We have built all of the daylight-sensing electronics right into the bulb, so it is just a simple replacement.
The bulb still features the constant-current electronics, and 15 of the newest multi-emitter LEDs, so its output far exceeds all requirements for all-around anchor lighting for boats up to 20M (65 ft).
Perfect for boats on a mooring, or for cruisers constantly on the hook. Never forget to turn off your anchor light again!
Fits Aqua Signal Series 40, 41, 42,& 50 as well as Hella 2984 and Perko 200 Fixtures.
Specifications
- Voltage: 8VDC – 30VDC Constant Current
- Wattage: 3W
- Amperage: 0.25A at 12V
- Lumens: 240
- Dimensions: Dia. 28mm x 40mm (+socket)
2 Year Warranty
Technical Specifications
| Base / socket | BAY15D |
|---|---|
| Voltage | 12V |
| Power | 3 W |
| Color | tri-color |
Multi-volt LED electronics are polarity-protected and built for the marine 12/24 V DC environment. Not sure this is the right base or fixture for your boat? Contact us with a photo of your old bulb or fixture and we'll confirm fit.
Shipping & lead times
Shipping & lead times
We're a small team of boaters and we pack orders within 1–5 business days (no weekend or holiday packing). You'll get an email with tracking as soon as a label goes on your box.
Specialty items — fire extinguishers (dangerous goods) and low-stock or built-to-order gear — can take longer; the product description will say so. On a tight timeline or meeting your boat somewhere specific? Contact us and we’ll work out the fastest way to get gear to you.
International orders ship DDU: local duties, taxes, and customs fees are the buyer’s responsibility. Full details in our shipping policy.
Returns & refunds
Returns & refunds
30-day returns from the date of purchase. Items must be unused, in the original packaging with all cables and accessories, with proof of purchase.
Contact us before shipping anything back — we’ll send the return form that must accompany your return. Fire extinguisher and lithium battery items carry a $15 administrative fee on returns.
Read the full refund policy.
Ask a cruiser before you buy
Ask a cruiser before you buy
Everyone here is a current or past cruiser — we’ve docked short-handed, re-rigged at anchor, and chased 12V gremlins too. Not sure this is the right fit for your boat? Send us your question before you order and we’ll give you a straight answer.
Check fit before ordering
- Base and pins: match the socket, contact count, pin position, orientation, and spacing to the lamp being replaced.
- Electrical fit: verify the DC voltage range, polarity requirements, and compatibility with existing dimmers.
- Physical clearance: compare the full bulb diameter, height, pin length, lens, and reflector clearance.
- Light output: choose the intended color, temperature, beam pattern, and navigation or cabin-light use.
Product specifications and details
This is our automatic photocell daylight sensing replacement LED bulb, which automatically comes on at dusk, and turns off again at dawn. It is a drop in replacement for your existing Aqua Signal, Hella, Perko or other anchor light or tri-color housing with a BAY15D bayonet base (double-contact, offset pins) socket.
No extra sensors, wires, or switches needed. We have built all of the daylight-sensing electronics right into the bulb, so it is just a simple replacement.
The bulb still features the constant-current electronics, and 15 of the newest multi-emitter LEDs, so its output far exceeds all requirements for all-around anchor lighting for boats up to 20M (65 ft).
Perfect for boats on a mooring, or for cruisers constantly on the hook. Never forget to turn off your anchor light again!
Fits Aqua Signal Series 40, 41, 42,& 50 as well as Hella 2984 and Perko 200 Fixtures.
Specifications
- Voltage: 8VDC – 30VDC Constant Current
- Wattage: 3W
- Amperage: 0.25A at 12V
- Lumens: 240
- Dimensions: Dia. 28mm x 40mm (+socket)
2 Year Warranty