I also have an Accanta alarm ( One of the older models ) ie; without a LCD screen. It is programed the same as the optima XL6. The only differance is the Accanta has a remote keypad but all the buttons look the same on the keypad as the Optima XL6 and it acts in the same way as far as programing it.
http://alarmhelp.net/downloads/optima_XL6_UK.pdf
Steve ( Birmingham ), July 2007