Train Tech TTSS5T

Sensor Signal (Theatre Indicator) 4 Aspect Outer Distant

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI images rather than photographs

Manufacturer description

With the use of the Sensor Signal developed by Train Tech you can easily add automatic signalling into your layout in seconds. The signals work by detecting a locomotive, or full train passing by it using a very small infrared sensor built in to the signal base. As soon as the locomotive has passed the sensor the signal changes to red and will stay red for about seven seconds to let the train clear the block. It then reverts back to yellow for a further seven seconds; then double yellow before then reverting back to green.

If more than one signal is being used in a section, such as a distant and home combination, the two signals can be linked by a single wire. This enables a signal sequence to be activated when the train passes the first signal. 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, just like the real railway.

If you have multiple aspect signals (3 and 4) the yellows are also incorporated into this sequence. These signals are easy to set up and only require a single wire to link them all together to the sequence.

These signals can be used on both DC and DCC layouts using two methods of installation.

On DCC layouts you just need to connect the base prongs to the underside of the rails (like a power clip) this then enables them to be given a DCC address or run them automatically. To install these signals onto an existing layout you can cut the prongs off at the dotted lines and solder two wires onto the back of the PCB and run the wires to the power Bus Wires.

On DC layouts you need to cut the prongs at the dotted lines and solder two wires onto the base and connect them to a smooth 12V DC power supply. If you do not already have a suitable smooth DC supply then we recommend the GMC-WM4 12V DC Wall Mounted Transformer, which gives great value for money and 1.25 amps of power, enough to power about 20 signals per supply.

The Theatre box on this signal can be controlled separately by programming it to a different address or by connecting it to a point motor with auxiliary terminals for DC use.

On both DC or DCC these sensor signals can be linked to the Mimic Switches for a manual override to yellow, control of a route indication and LEDs indicating signal colour and track occupation.

MEASUREMENTS

• HEIGHT 69mm

Catalogue listing

Train Tech Sensor Signal (Theatre Indicator) 4‑Aspect Outer Distant – Part number TTSS5T

The sensor signal incorporates a miniature infrared detector in the base that registers a locomotive or full train as it passes. When the train clears the sensor the signal changes to red and remains red for approximately seven seconds, then to yellow for another seven seconds, followed by double yellow before returning to green. When two signals are used in a section (for example a distant and a home signal) a single linking wire allows the first sensor to set its signal to red and, as the train reaches the second sensor, the first signal reverts to yellow while the second changes to red, providing fully automatic block signalling. The same sequence applies to three‑ or four‑aspect signals, with the additional yellow aspects incorporated automatically.

The units are suitable for both DC and DCC layouts. On DCC track the base prongs can be clipped onto the rail underside and the signal addressed via DCC, or the prongs can be removed and two wires soldered to the PCB for connection to a power bus. On DC track the prongs are also removed, wires are soldered to the base and a smooth 12 V DC supply is required; a 12 V 1.25 A wall‑mounted transformer such as the GMC‑WM4 can comfortably power around twenty signals. The theatre indicator box may be programmed to a separate address or linked to a point motor using the auxiliary terminals for DC operation. Both control systems can be combined with Mimic Switches for manual yellow override, route indication and LED track‑occupation feedback.

Measurements: height 69 mm.