RB 3122 2x Semaphores decoder is used to control two 5-aspect semaphores or five 2-aspect semaphores and display signals that are used on the real railroads. The decoder works with DCC Command stations. The decoder has built-in schemes of Polish signals system. The RB 3122 works in digital DCC mode (connects to the DCC bus directly from the tracks or from the command station) or in analogue mode for 5-aspect semaphores (requires an external power supply and rotary switches with a ladder of resistors). The decoder has a brightness adjustment of the semaphore lamps.

Basic functions:

• Supports 2 5-aspect semaphores or 5 2-aspect shunting semaphores (or more with parallel connection)

· Decoder works in DCC and analogue mode (ver. D and above: change mode via a switch on the PCB)

• Outputs for connecting two 11-position switches (analogue mode)

• Easy configuration via mobile app RailBOX: Railroad Control                     (ver. D and above, see more here)

· Supports Railcom® protocol (ver. D and above)

· Possibility of the manual decoder configuration using button on the PCB

· Possibility to change the lamp brightness of each signal independently

Technical parameters:

• Decoder PCB dimensions - 50 x 50 mm.

• PWR supply - 7 - 20 V AC/DC or DCC.

• Current consumption - 25 mA.