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Add MSS (Modular Signal System)   

Animate your Layout or Free-mo Module Signals the easy way.

Our components (Signal Driver , Detector, Crossover Breakout, Straight Break Out, and Cascade boards) are the smart way to add MSS 2.0 signal animation to a new or existing lay out or free-mo module.

Scale Signal System Products

Scale Signal Systems Detector v1.0

Provides the Optical Detection function described in the MSS specification. It uses advanced digital sampling to enhance the detection capabilities of the OPB-704WZ optical sensor. The module can also be used to provide release delay capabilities for current detection products  without release delay capabilities. The optical and current detection outputs are combined into two buffered outputs. 
Supports 1 OPB-704WZ optical sensor. Can be configured with 0.1" headers rather than terminal blocks for use with .1” (2.54mm ) Female to Female Connector Cables. Please specify at time of order. Optical sensor not included.  Not offered as a kit.

Assembled and Tested  $59

Scale Signal Systems Signal Driver v2.2TH

Provides the signal driver function for up to 4 signal heads as described in the MSS specification. Two heads are 3 color and two heads single color.
Drives lamps/LEDs with 12v to support older signals. RJ 12 connectors can be replaced with terminal blocks.  This board can be configured with 0.1" headers rather than terminal blocks for use with Dupont Wire Female to Female Connector Cables 2.54mm 1P-1P. Please specify at time of order.
Not offered as a kit. 

• Assembled and Tested $100

Scale Signal Systems SLS Terminator v1.0

Provides Plug and play termination for Signal Driver board
Has series resistors for Lamp/LED
Allows for easy removal of signal for travel or troubleshooting. RJ 12 connectors can be replaced with terminal blocks.
This board can be configured with 0.1" headers rather than terminal blocks for use with Dupont Wire Female to Female Connector Cables 2.54mm 1P-1P. Please specify at time of order. 

• Kit price $8.00 Assembled and Tested Add $3

Scale Signal Systems Cascade v1.0

Performs the cascade module function described in the MSS specification.
Supports Approach Diverging Function.
This board can be configured with 0.1" headers rather than terminal blocks for use with Dupont Wire Female to Female Connector Cables 2.54mm 1P-1P. Please specify at time of order.

• Kit price $10.00 Assembled and Tested Add $8

Scale Signals Systems Crossover Breakout v1.0

Provides a crossover module function described in the MSS specification. Provides a breakout for simple connection of a current detector.
This board can be configured with 0.1" headers rather than terminal blocks for use with Dupont Wire Female to Female Connector Cables 2.54mm 1P-1P. Please specify at time of order.

• Kit price $6.50 Assembled and Tested Add $4

Scale Signal Systems Straight Breakout v1.0

Provides a pass through function for easy hookup of the MSS bus.
Provides a breakout for simple connection of a current detector.
This board can be configured with 0.1" headers rather than terminal blocks for use with Dupont Wire Female to Female Connector Cables 2.54mm 1P-1P. Please specify at time of order. 

• Kit price $6.50 Assembled and Tested Add $4

Scale Signal Systems supports open standards. This includes open specifications like MSS and OpenLCB.


All of our hardware designs are open source and are licensed under the Creative Commons Attribution-ShareAlike license


In addition all of our software is also open source and licensed under GNU General Public License, version 3 (GPL-3.0)

WARNING: These products contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.