The TORTOISE™ is unique in the industry in being the first (and only)
low-current, stall-motor mechanism which was specifically designed to be a
model railroad switch machine. The new features of this machine resulted in a
US patent for the design issued to CIRCUITRON.

Use with the Tortoise Switch Machine and an upper or lower quadrant semaphore-style signal. Includes al the logic circuitry to drive the signal to all three positions. Works with BD-1 or BD-2 Block Occupancy Detectors. A minimum of two blocks must have detectors installed for the SD02 to indicate all three positions. Requires 10-18V DC power.

Changes direction when the Opto-Sensor is covered. Use for test track, window display, mine train or automatic reverse loop operation. Pushbuttons can be connected for manual reversing. Requires 12V DC power source. Constructed on 2 x 3" printed circuit board.

Same as AR-1, but with adjustable delay to hold train at sensor before reversing. Adjustable delay from one second to over one minute. Can be connected to pushbutton or DT-4 to permit stops and delays without reversing. Requires 12-18V DC power supply. Constructed on 3 x 3" printed circuit board.

Tiny Opto-Sensors detect train movement. Sensors mount between the rails and activate circuitry when shaded from a passing train. Independent of track power, rolling stock requires no modifications. Sensors fit between ties and may be ballasted over in most cases. Circuitry is extremely sensitive and will operate properly under very low levels of room light. Positive indication whenever a section of a layout is occupied by rolling stock. Contains all circuitry to power two-color block signals at each end of the protected block. Will give proper indications if a train leaves a block by backing out. No modifications to rolling stock needed. Completely bi-directional. No additional driver boards or relays are needed. 250 ma. output can power lamp or LED-type signals. Requires 6-20V DC input. Independent of track power. Compatible with radio or command control systems.

Slows train speed in a section of track. Bi-directional; use with AC or DC power. Output is continuously variable between 1/4 and 3/4 of the input voltage.

The Tortoise slow motion switch machine represents the very latest high technology design. Circuitron has DPDT auxiliary contacts, turnout linkage included, simple mounting and simplified wiring. Prototype turnouts don't snap open and close, they move slowly. This easy-to-mount switch machine features prototypical slow-motion action-three seconds to complete throw. Easy-to-mount slow-motion switch machine features: Prototypical slow-motion action - three seconds to complete throw, Precision-engineered gear drive mechanism, Simple mounting with linkage included - no additional brackets or linkage necessary * Convenient auxiliary contacts - two sets SPDT provided, Easy wiring - two-wire connection possible

The Tortoise slow motion switch machine represents the very latest high technology design. Manufactured by Circuitron has DPDT auxiliary contacts, turnout linkage included, simple mouinting and simplified wiring. Prototype turnouts don't snap open and closed, they move slowly. This easy-to-mount switch machine features prototypical slow-motion action-three seconds to complete throw. Easy-to-mount slow-motion switch machine features: * Prototypical slow-motion action - three seconds to complete throw * Precision-engineered gear drive mechanism * Simple mounting with linkage included - no additional brackets or linkage necessary * Convenient auxilliary contacts - two sets SPDT provided * Easy wiring - two-wire connection possible

Small (Slow Motion Actuator with Integrated Logic) features same size & mounting as the TORTOISE (sold separately). Compatible with all DCC systems that provide accessory address control. Two-wire connection to DCC bus with no external power necessary. Easy programming. May also be controlled with panel switches or detection circuits. Adjustable throw speed. Power up position user definable or will default to last used. Other specifications same as TORTOISE (#800-6000).