R8121 TTS Sound Decoder: Class 66

IMPORTANT - The decoder does not support sound under DC (analogue) operation. Sounds can only be played under DCC (digital) operation. This applies to all sounds, both running and spot sounds. The locomotive's motor may be controlled under DC operation. Supports short and long decoder addresses. Adjustable acceleration and deceleration. Back EMF load compensation. Up to 19 controllable spot sounds dependent on model including whistles or horns etc.

Features two sound channels allowing for simultaneous play of full locomotive engine sounds, & individual spot sounds e.g. horns, whistles, brakes, wagons coupling etc.

NOTE: Only one spot sound can be played at the same time. It is possible to alter the volume of each sound through an individual dedicated CV. Range 0-8- Decoder is equipped to support directional front and rear lighting operation via F0 on the controller, providing that the product is fitted with lights.

The decoder is equipped with 1 aux function output controlled by F18 or F25 dependent on locomotive type (diesel or steam).
Motor current: maximum continuous 500mA;
Motor current: peak 1amp (no function load);
Function output current maximum 100mA (unprotected);
Decoder current: maximum continuous 800mA (shared motor and functions);
Number of sound channels: 2; Termination: 8 pin plug NEM652. NMRA.