ES84 4 Aspect Standard Offset Signal Kit Square Head Bachmann_Autumn_23 It is that easy

It is that easy

As the locomotive passes the first sensor the signal changes to red (as before) but as the train passes the second sensor the previous signal reverts to yellow and the additional signal changes to red which gives fully automatic block signalling

as their next N gauge powered model

Footprint 90mm x 55mm

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ES84 4 Aspect Standard Offset Signal Kit Square Head Bachmann_Autumn_23 It is that easy4 aspect standard offset signal kit square head A resistor is included which must be used. Suitable for 12volt DC power supply.