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. Function list F0 Headlight/rearlight (if fitted to locomotive) F1 Engine start/stop F2 Horn high-low F3 Horn low-high F4 Brake squeal F5 NOTCH up F6 NOTCH down F7 Return to IDLE F8 Thrash F9 Cold start override F10 Compressor F11 Door slam F12 Fan F13 Horn high F14 Horn low F15 Primer F16 Slow flange squeal F17 Spirax valve F18 Horn short low F19 Horn short high F20 Wagons buffering F21 Wagons clanging F22 Alternative door slam F23 Guard's whistle F24 locomotive buffering F25 Aux (if used in locomotive) Hornby TTS decoder installation guide: https://www.hornby.com/uk-en/media/Fitting_a_Decoder.pdf - 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 - 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