• homeGwydir Valley Models Home page
• productsWe sell locos & rolling stock kits, train detectors and those details that bring a layout to life such as sounds, signs & weathering products including Rustall.
• exhibitionsWhere you can meet us face to face
• aboutAbout Us
• orderingContact Gwydir Valley Models
• linksLinks to other useful sites
• irdotA full description of IRDOT products and how they work

2 ASPECT SIGNALLING

IRDASC-1

This operates 2 aspect LED signals wired common to negative.

IRDASC-2

This operates 2 aspect signals via a relay output for bulb or LED signals. The LED signals may be either common negative, common positive or 2 wire signals such as Patronics.

IRDASC-3

Operates signals in same way as IRDASC-2. There is an optional relay contact which opens when the signal is at red. Its purpose is to stop trains running through a red signal. The isolation section is positioned in front of the signal.

SA7-SB

This unit combines signal operation with gradual adjustable slowing and acceleration. Like the other units each SA7-SB forms a signalling block section.

SA8-SB

This operates a station stop block section. There is gradual acceleration and braking of the train.

SA5-SB

This unit operates the signals and points of a loop as a block section with gradual braking and acceleration.

SA6-B

This unit is for where a series of out of sight storage loops are used as part of a block system.

The IRDASC units can be used with either conventional DC control or with DCC control. The SA units can only be used with conventional control.