BAD-SBCA Block Animator by Logic Rail Technologies. Detects trains and controls Tomar semaphore motors, 2 & 3-light bulb-based signals and PRR/B&O position light signals (both bulb-based and LED signals wired with a common anode [positive]). Creates near-prototypical block control signal behavior without spending lots of money. Uses photocell detection (requires adequate overhead lighting). Works with both DC and DCC layouts. Complete instructions included. Easy to install.

Requires no modification to track wiring or rolling stock.

Bi-directional control of 2 block signals. An eastbound (left to right) train will cause signal EB to transition from green (or proceed position) to red (or stop position) when photocell E2 is covered. It will remain red until photocell E1 is covered and then uncovered at which time it will change to yellow. After a delay (see below) the signal will change back to green. A westbound (right to left) train will cause signal EB to transition from green to red when photocell E1 is covered. It will remain red until photocell E2 is covered and then uncovered at which time it will change back to green. Just like the prototype! Signal WB will behave similarly with respect to the opposite direction of travel and photocells W1 and W2.

Features:

• Duplicates the prototype signal behavior of having the signal BRIEFLY show yellow (or caution position) when it transitions from green to red.
• Yellow delay (i.e. when train leaves the "next block") is selectable (10 or 30 seconds).
• Signal aspects sequenced prototypically based on direction.
• Approach Lighting capable (signal is dark until train approaches!).
• Correct aspects will be shown even if a train covers a photocell and then backs up, or if a train stops between photocells.
• Includes 4 photocells for proper bi-directional behavior (additional photocells available)
• Each photocell has its own sensitivity adjustment and the Block Animator provides a setup mode for making the adjustment process easier
• Current limiting resistors included
• Powered from AC or DC - draws about 60mA
• Solid State Design (1 year limited warranty).