AUTOMATIC ROUTE SELECTOR
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The AUTOMATIC ROUTE SELECTOR automatically switches Seep or Peco point motors when a train approaches. An IRDOT-1 or reed switch is used to detect the approaching train.
D1 D2 D3 D4 Depending on which terminal the IRDOT-1 or reed is connected to a different sequence of point operation is obtained: "A" AND "C" are the terminals which connect to the point motor. For example connecting the IRDOT-1 to D1 makes the point alternately switch left (A) and right (C) for each successive train. Connecting to D2 will cause approaching trains to travel left, right, right, left, right, right, etc.
A A A A
C C A C
A C A A
C A C A
A C A C
C C A A
A A A C
C C C A
A C A A
C A A C
Power Connections: For a 12 volt DC supply connect the supply positive to the "+" and supply negative to the "o" terminals of the AUTOMATIC ROUTE SELECTOR. The IRDOT-1 is wired to the power supply as shown in the diagram. Connect terminal 1 to positive and terminal 6 to negative.

Inhibit Connection: When this terminal is connected to 0volts the points are not switched. The Inhibit terminal may be connected to the direction detector so that, for example, left to right trains switch the points but right to left trains do not switch the points. Another use is to connect the terminal to a switch to give a choice between manual and automatic operation. (switches for operating the point motor manually can be connected in parallel to the ARS terminals). Thirdly the terminal can be connected to elsewhere on the layout such as to a block section so that the points do not switch when a train is at a particular position.
Train detector: Wire from terminal 2 of the IRDOT-1 to terminal D1 (or D2 or D3 or D4) of the AUTOMATIC ROUTE SELECTOR. A Reed switch may be used instead of an IRDOT-1 train detector.
Point motors: There are two relays for operating the point motors. These are best thought of as automatically operated switches. The contacts are normally open. They close for a second then reopen. Two or more points can be operated together by the AUTOMATIC ROUTE SELECTOR. The wiring is the same as using a manual switch. Either a capacitor discharge unit or a transformer is used to power the point motors in the usual way
LED indications:
Green:  Unit is ready to switch.
Green and red:  Relay is switching point motor.
Red:  Dead time. Whilst red is lit the points will not switch. This is to allow trains to clear the points without retriggering them.
Red and Green rapid Flashing:  Inhibit terminal has been operated. Points will not be switched.
Slow Motion point Motors:
A version of the AUTOMATIC ROUTE SELECTOR  for Slow Motion point motors, such as "tortoise", is also available..