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
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   Horn high two bursts
F11   Door slam
F12   Fan
F13   Horn long high
F14   Horn low two bursts
F15   Primer
F16   Slow flange squeal
F17   Spirax valve
F18   Horn low
F19   Horn high
F20   Wagons buffering
F21   Wagons clanging
F22   Coupling 1
F23   Guard's whistle
F24   Coupling 2
F25   Aux (if used in locomotive)
 
Installation guide 
- 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