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OpSIG Publications - A Compendium Of Model Railroad Operations - From Design To Implementation     Dispatcher to OpSIG Publication No. 2, you're... Ready to Roll!     All model railroaders, whether expert or beginner, will find a...

PRE-OWNED unit.  less than one hour on-time.  Was installed on show demo layout that never went to a show...

These are new units.  The were opened and then returned after customer discovered I shipped the wrong product.  One unit of the five total has a broken mounting lug from the extra handling...

RR-CirKits 3TK2-1 I/O Module Mounting Track - Single Position This plastic mounting track is suitable for mounting a single I/O module to a flat surface. (3 1/2" x 2") (I/O board not included)  

RR-CirKits 3TK2-2 I/O Module Mounting Track - Dual Position This plastic mounting track is suitable for mounting two I/O modules to a flat surface. (3 1/2" x 4") (I/O board not included)  

RR-CirKits 3TK2-2W I/O Module Mounting Track - Dual Position Wide Spacing This plastic mounting track is suitable for mounting two I/O modules to a flat surface with extra wiring space between modules. (3 1/2" x 5") (I/O board not included)  

RR-CirKits 3TK2-3 I/O Module Mounting Track - Thee Position This plastic mounting track is suitable for mounting three I/O modules to a flat surface. (3 1/2" x 6") (I/O board not included)  

RR-CirKits 3TK2-3W I/O Module Mounting Track - Three Position Wide Spacing This plastic mounting track is suitable for mounting three I/O modules to a flat surface with extra wiring space between modules. (3 1/2" x 8") (I/O board not included)  

RR-CirKits 3TK2-4 I/O Module Mounting Track - Quad Position This plastic mounting track is suitable for mounting four I/O modules to a flat surface. (3 1/2" x 8") (I/O board not included)  

RR-CirKits 3TK2-4W I/O Module Mounting Track - Quad Position Wide Spacing This plastic mounting track is suitable for mounting four I/O modules to a flat surface with extra wiring space between modules. (3 1/2" x 11") (I/O board not included)  

RR-CirKits 3TK2-6 I/O Module Mounting Track - Hex Position This plastic mounting track is suitable for mounting six I/O modules to a flat surface. (3 1/2" x 12") (I/O board not included)  

RR-CirKits BOB-S Screw Terminal Break Out Board This board is designed to break out the 10 pin IDC ribbon cables into minature screw terminals for easy connections. (0.4" wide by 2.5" long).

RR-CirKits BOD-8-SM Block Occupancy Detector This new board is compatible with LCC node sample mode which allows using output drivers on the same I/O port. This board operates as a DCC occupancy detector for 8 blocks using remote CT coils. It outputs...

RR-CirKits BOD4 Block Occupancy Detector This board operates as a DCC occupancy detector for 4 blocks using remote CT coils. It outputs logic levels, and has a RR-CirKits standard ribbon connector interface. The "Power-Lok" feature optionally monitors...

RR-CirKits BOD4-CP Block Occupancy Detector w/ Dual Turnout Driver This board operates as a DCC occupancy detector for 4 blocks using remote CT coils. It outputs logic levels, and has a RR-CirKits standard ribbon connector interface. The "Power-Lok"...

RR-CirKits Breakout-QL Quik-Link 10-pin IDC Breakout Board This Breakout board allows easy solder free connections from up to 8 Quik-Link devices to 10 pin I/O cables using 3 wire servo style cables. Also compatible with Berrett Hill products.