The IRDOT-1 can be used to give an indication of the presence of a train in hidden sidings, inside engine sheds and stations with overall roofs and other locations where the train is difficult to see by the operator. The indication is given by the illumination of an LED which can be wired to a control panel.
The IRDOT-1 uses infrared to detect trains. When it detects a train it lights an LED and gives an output for activating other controls. The LED may be mounted on a control panel. It is simple to wire, requiring 2 wires for power and 2 wires for the LED.
As the IRDOT-1 can operate in tunnels and detect all types of rolling stock it is very suitable for train positioning and indicating track occupation in hidden sidings and loops. It is usually best to position the IRDOT-1 at the end of the loop where the front of the train is to stop. Once the "train detected" LED lights the train can be stopped. The IRDOT-1 operates in both light and in the dark.
It is also used to activate automatic controls. For example when used with the SA8 Station Stop it is located at the positions where the train is to start slowing and where it is to stop. WIRING: This is as detailed below, but full instructions are supplied with the IRDOT-1.
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