Manufacturer: SWD, Item number: S0221, Version: V1-R1
| Key | Functions | Sound slots | Volume CVs | Volume values |
|---|---|---|---|---|
| F0 | Front light | |||
| F1 | Sound on/off | 1, 6, 13, 19 | 259, 299, 355, 403 | 128, 64, 48, 32 |
| F2 | Single Tone horn Playable | 3 | 275 | 96 |
| F3 | TwoTone horn | 4 | 283 | 96 |
| F4 | Straight Air Dump | 23 | 435 | 64 |
| F5 | Drive Hold | 2 | 267 | 128 |
| F6 | Couple Up | 8 | 315 | 128 |
| F7 | Uncouple | 7 | 307 | 128 |
| F8 | Brake 1 | 11 | 339 | 64 |
| F9 | flange Squeal | 15 | 371 | 96 |
| F10 | Spirax valve | 9 | 323 | 32 |
| F11 | Guards Whistol | 10 | 331 | 64 |
| F12 | Coast | |||
| F13 | Aux 1 | |||
| F14 | Aux 2 | |||
| F15 | Auto Uncouple | |||
| F16 | Volume | |||
| F17 | AUX3 | |||
| F18 | AUX4 | |||
| F30 | 32 | 507 | 64 |
Make sure that index CV31 is set to 16 and index CV32 is set to 1 before changing a volume CV.