Train Tech TTSS2T

Sensor Signal (Theatre Indicator) 2 Aspect 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 yellow and will stay yellow for about seven seconds to let the train clear the block. It then reverts 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 yellow (as before) but as the train passes the second sensor the previous signal reverts to green and the additional signal changes to yellow 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 62mm

Catalogue listing

Train Tech Sensor Signal (Theatre Indicator) 2‑Aspect Distant – Part number TTSS2T. The unit provides an automatic signalling function for model railway layouts by detecting a locomotive or full train with an integrated infrared sensor in the signal base.

When a train passes the sensor the signal changes from green to yellow and remains yellow for approximately seven seconds to allow the train to clear the block before reverting to green.

Multiple signals, such as a distant and a home signal, can be linked with a single wire. The first sensor triggers the initial signal to yellow; when the train reaches the second sensor the first signal returns to green while the second changes to yellow, creating a fully automatic block signalling sequence.

The same linking method works with three‑ and four‑aspect signals, incorporating the yellow aspect into the sequence without additional wiring.

For DCC layouts the base prongs connect to the underside of the rails like a power clip, allowing the signal to be given a DCC address or to operate automatically. Existing layouts can be adapted by cutting the prongs at the dotted line and soldering two wires to the PCB, then running them to the power bus.

For DC layouts the prongs are also cut at the dotted line and two wires are soldered to the base, which must be connected to a smooth 12 V DC supply. A suitable supply such as the GMC‑WM4 12 V DC wall‑mounted transformer (1.25 A) can power roughly twenty signals.

The theatre box can be programmed to a separate address or connected to a point motor via auxiliary terminals for DC use. Both DC and DCC installations may link the sensor signals to Mimic Switches for manual yellow override, route indication and LED indicators of signal colour and track occupation.

The signal measures 62 mm in height.