GRS Signal SA1 Kit: O Scale


From the catalogs of the General Railway Supply Company the SA1.

The Type SA Signal produces a powerful signal indication at a minimum of energy consumption due to its scientific optical construction. It is equipped with an elliptical reflector which uses approximately 80 per cent of light emitted by the concentrated filament lamp. All three indications are projected through one lens, therefore the beam of light is always in the engineman’s line of vision due to the unchanged location of the three indications. The following features have contributed largely to the rapid adoption of this signal since its introduction in February of 1927.
It is now being used by:
41 railroads in United States
5 railroads in Canada
6 railroads in Foreign Countries

Your choice of GRS Cabinet 1, 2 or 3 select below.

Click here for our full instructions.

There may be some minor sanding needed on the parts. We removed all the supports, but there may be some small “bumps” where the supports were that will need to be sanded/filed off for a better fit. The hole for the pole has been reamed out for a 3/32 tube (Not included) and should not need gluing as it’s a snug fit. Use ACC glue for the cabinet door and pinnacle. Any good model paint will work, but we used Tamiya silver from a spray can.

Brass tube is NOT included – You supply the 3/32 brass tube. (K&S # 8126) or aluminum 3/32 tube (K&S # 8101)
LED is NOT included as there could be many variations. We used a red/green Tony’s TTX Ultra Micro Bicolor LED, 0605 Red & Green, 4 Pack, with resistors from Tony’s Train Exchange.

  • Many of our parts come with supports still attached, and will need to be carefully cut. We always recommend a good sprue cutter for this. Some minor sanding may be required. Parts that have had their supports removed may have some small bumps where the supports were removed that will need to be sanded/filed off for a better fit.
    ACC glue works well for all our resin parts.
    Parts take paint well after priming. We recommend Mr. Primer Surfacer 1000, but any good thin primer will work.
    All parts come unpainted.
SKU: O/Sig/SA1Kit Categories: ,

Additional information

Cabinet Selection

RGS Relay Cabinet #1, RGS Relay Cabinet #2, RGS Relay Cabinet #3