Hella Marine MST3 Slim Strobe LED Lighthead, Blue Light, 10-30V DC, SAE J845 Class 1

Overview

The Hella Marine 358111011 is a slim blue LED strobe lighthead that runs on 10-30 V DC (12V or 24V systems) and draws 3 W.

It uses three LEDs and includes 12 user-selectable flash patterns. When multiple units are wired for synchronization, they can flash at the same time or alternate, which helps keep a multi-light setup looking consistent.

It meets SAE Class 1 and California Title 13 requirements that are commonly specified for warning strobe applications.

Key features

• Blue LED strobe output with three LEDs and 12 built-in flash patterns
• 10-30 V DC input for common 12V and 24V onboard electrical systems
• 3 W power consumption for a light electrical load
• Synchronization wiring supports simultaneous or alternating flash timing across multiple units
• Screw-mount installation with a low-profile lighthead for tight mounting spots
• 8 in (203 mm) pigtail with open wire ends for hardwiring into a switched circuit
• Plastic housing intended for warning strobe use

Installation and wiring

Mount the lighthead to a flat, solid surface where it will not be flexed by vibration. On thin panels, a small backing plate on the inside can help keep fasteners secure over time.

The lead is an 8 in pigtail with open wire ends, so plan on making sealed connections. Tinned marine wire and adhesive-lined heat-shrink splices (or a sealed junction point) help keep corrosion out, and a simple strain-relief loop prevents the cable from being pulled at the lighthead.

Power it from a switched 12V or 24V DC circuit within the 10-30 V range, with overcurrent protection placed close to the source. If you are synchronizing multiple units, route and protect the wiring so it stays clear of chafe points and moving gear.

Compatibility and use notes

This is an auxiliary strobe lighthead, not a navigation light and not a general courtesy light. It is usually installed where it can be seen clearly from the direction you need attention, such as a hardtop face, radar arch, transom area, or inside a window for temporary signaling.

It suits workboats, tow and assistance vessels, and support craft that need a compact blue warning signal and may want multiple lightheads that flash together. Local rules vary on when and where blue warning strobes are permitted on the water.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.