Buttons are:

1. Up and down changes appliance view
2. OK changes between one, seven and 30 days
3. Press and hold OK to set the clock
4. Press and hold down to sensor-tune the whole house, or the currently-displayed appliance number
5. Press and hold up to set normal price (13.9p default, also sets low price the same)
6. Press and hold up and down to set low price (and start times, if prices are different)
7. Press and hold OK and down to download history to PC. Please note: all processor activity is halted during this download, even the clock, with a lot of history, the download may take some time! Self-resets when done
8. Press and hold Up during switch-on to display whole LCD for two seconds then software version number. Cycle power to restart.
9. Press and hold up and down during switch-on to do the above, then wipe all History and Tuning IDs and burn in fresh defaults, previous DSB is saved. Data is not physically erased, only the pointers are quickly set to zero, like deleting a hard disk file.