Federal Signal SLMB2 and SLMB3 StreamLine® Dock Bases

The Federal Signal SLMB2 and SLMB3 StreamLine® Dock Bases provide a configurable platform for building 2-stack or 3-stack audible and visual signaling assemblies. Designed as part of the StreamLine® Modular Series, these dock light bases can be paired with compatible StreamLine® visual and audible modules to create a signal assembly suited to the needs of the application.

The SLMB2 is a 2-stack modular dock base, while the SLMB3 is a 3-stack modular dock base. Both options allow one function per position and are available in 24VAC/DC or 120–240VAC configurations. Each base comes standard for surface mounting with visors included. Optional wall mounting and 1/2″ NPT pipe mounting accessories are available separately, and retaining rings can be used in place of visors when additional side visibility is required.

The SLMB2 and SLMB3 are well suited for indoor and outdoor high foot traffic areas, including parking garages, factories, and loading docks. Available Canada-wide through Westech Industrial, these dock bases can be supported with product selection, compatible module pairing, service support, and integration into broader facility signaling or safety systems. For projects requiring a more complete assembly, Westech’s custom fabrication capabilities can support panels, enclosures, mounting, and project-specific solutions.

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Description

2-Stack and 3-Stack Dock Base Options

The Federal Signal SLMB2 and SLMB3 are modular dock bases for multi-position signal assemblies. The SLMB2 supports a 2-stack dock light configuration. The SLMB3 supports a 3-stack dock light configuration. This gives facilities flexibility when building a clear signaling system. Teams can choose the number of positions based on the application. A 2-stack base works well for simple status indication. A 3-stack base supports more detailed signal communication.

Configurable With StreamLine® Audible and Visual Modules

The SLMB2 and SLMB3 work with compatible StreamLine® audible and visual modules. Compatible models include SLM100, SLM200, SLM300, SLM350, SLM500, SLM700, SLM1400, and SLM1450. These modules allow facilities to build a signal assembly around specific site needs. Teams can select visual signals, audible signals, or a combination of both. Visual and audible top modules are sold separately. This gives users more control over the final configuration. The dock base cannot be used with SLM600 or SLM800 modules.

One Function Per Position

Each dock base supports one function per position. This helps teams create clear and organized signal arrangements. Facilities can separate different alerts, operating states, or status indications. This layout helps workers understand each signal more quickly. It also supports clearer communication in busy environments. Operators, drivers, pedestrians, and maintenance teams can identify signal changes with less confusion.

Indoor and Outdoor Application Use

The StreamLine® Dock Light Base option supports indoor and outdoor applications. It works well in high foot traffic areas. Common locations include loading docks, parking garages, factories, and industrial facilities. These environments often involve people, vehicles, and equipment moving at the same time. A clear signal assembly can improve awareness in these active areas. It can also support safer and more efficient site communication.

Standard Surface Mounting With Included Visors

Each SLMB2 and SLMB3 dock base comes ready for surface mounting. Federal Signal includes visors with each base. These visors help direct visibility toward the intended viewing area. This can help in locations with changing light or movement. Facilities can use the standard surface mount for many common layouts. The included visors also support applications that need more directional indication.

Optional Mounting Accessories

Facilities can adapt these modular dock bases with optional mounting accessories. The SLMB23W wall mount supports wall-mounted installations. The SLMB23N 1/2″ NPT pipe mount supports pipe-mounted installations. These accessories are sold separately. They help teams position the signal assembly for better visibility. They also support installations where surface mounting may not suit the site layout.

Retaining Ring Option for Side Visibility

Teams can replace the included visors with StreamLine® top module retaining rings. This option can improve side visibility in some applications. Retaining rings may suit areas with multiple viewing angles. They can also help when signals need visibility from more than one direction. This gives facilities another way to tailor the assembly to the environment.

Applications

The Federal Signal SLMB2 and SLMB3 StreamLine® Dock Bases are suitable for:

  • Loading docks
  • Parking garages
  • Factories
  • Indoor high foot traffic areas
  • Outdoor high foot traffic areas
  • Facility status indication
  • Audible and visual signaling assemblies
  • Applications requiring 2-position or 3-position signal indication

Documents

Federal Signal SLMB2andSLMB3_Sales_Sheet_Data_Sheet_July2024_Westech.pdf

Federal Signal_SLMB2 and SLMB3 StreamLine Modular Multifunctional Dock Base_Manual_June2026_Westech.pdf

Manufacturer info

Federal Signal is the world leader in innovative equipment, signaling products and communication and security systems that keep workers, first responders and our communities safe and secure.

https://www.fedsig.com/

SPECS

Manufacturer:
Federal Signal.
Product Series:
StreamLine® Modular Series.
Product Type:
Modular multifunctional dock base / dock light base.
Models:
SLMB2 and SLMB3.
SLMB2 Configuration:
2-stack modular dock base.
SLMB3 Configuration:
3-stack modular dock base.
Functionality:
One function per position.
Voltage Options:
24VAC/DC or 120–240VAC.
Compatible Modules:
SLM100, SLM200, SLM300, SLM350, SLM500, SLM700, SLM1400, SLM1450.
Non-Compatible Modules:
SLM600 and SLM800.
Audible/Visual Modules:
Sold separately.
Standard Mounting:
Surface mount.
Included Accessories:
Visors.
Optional Wall Mount:
SLMB23W.
Optional Pipe Mount:
SLMB23N, 1/2" NPT.
Optional Retaining Ring:
SLM-RR.
Cable Entry:
20 mm (51/64") diameter.
SLMB2 Height:
9.09" / 231 mm.
SLMB3 Height:
13.46" / 342 mm.
Width:
4.72" / 120 mm.
Installation Environment:
Indoor/outdoor.
IP and NEMA Ratings:
Dependent on selected top audible or visual signaling devices.
Installation Requirement:
To be installed by qualified personnel only.
Electrical Code Guidance:
Intended to be installed in accordance with applicable National Electrical Code requirements in the United States and Canadian Electrical Code requirements in Canada.
Availability:
Canada-wide through Westech Industrial.

PRODUCT FAQ's

What is the difference between the Federal Signal SLMB2 and SLMB3?
The SLMB2 is a 2-stack modular dock base, while the SLMB3 is a 3-stack modular dock base. Both are part of the Federal Signal StreamLine® Modular Series and are designed to work with compatible StreamLine® audible and visual signaling modules.
Are the visual and audible modules included with the dock base?
No. The visual and audible top modules are sold separately. The SLMB2 and SLMB3 provide the dock base, and compatible StreamLine® modules can be selected to build the required signaling assembly.
Which StreamLine® modules are compatible with the SLMB2 and SLMB3?
Compatible modules include SLM100, SLM200, SLM300, SLM350, SLM500, SLM700, SLM1400, and SLM1450. The dock base cannot be used with SLM600 or SLM800 modules.
Can the SLMB2 and SLMB3 be used outdoors?
Yes. The StreamLine® Dock Light Base option is suitable for indoor or outdoor applications. IP and NEMA ratings depend on the selected top audible or visual signaling devices.
What mounting options are available?
Each base comes standard for surface mounting with visors included. Optional accessories include the SLMB23W wall mount and the SLMB23N 1/2" NPT pipe mount. Retaining rings can also be used in place of visors when additional side visibility is required.
Can Westech help with product selection and integration?
Yes. Westech Industrial can help customers select the correct Federal Signal SLMB2 or SLMB3 dock base, compatible StreamLine® modules, voltage configuration, and mounting accessories for their application. Westech can also support broader facility signaling requirements through service capabilities and custom fabrication, including project-specific panels, enclosures, mounting, and integrated solutions where required.