Just moved into new home and have code but so does last tennant who's rather untrustworthy apparently and no manual anywhere. Trial and error got me no-where except bad tempered.

Derek Fender, May 2008

CODE CHANGE
Press > PROG > All indicators will show
Enter your code > Tamper indicators show
Press 8 > Zone indicators 1,2,3, & 4 show
Enter NEW CODE (4 Digits) > A series of rapid blips will be heard & the tamper indicator will show

The new code is now in the memory

Press RESET > Day indicator shows, job done!

acorn, May 2008