Changing the alarm code on the gaurdtec 500 series alarm

For a guardtec 593

Programming User Codes
(Master code only)
system.
1) With the display showing ' Un ' enter a Master code
2) The display will show ' SE '
3) Press NO five times, the display will show ' Uc ' (flashing).
4) Press YES, the display will show ' U- '
5) Enter the User number you wish to program (1 to 7) followed by YES
6) The display will show ' Co ' Enter the required code (4, 5 or 6 digits) followed
by YES. (Entering 000000 will delete an existing code).
7) The display will show ' t- ' enter the code type from the following list
1 = Set Only 2 = Main User 3 = User 4 = Master followed
by YES. A full description of code types is given on page 3.
8) The display will show ' Uc ' (flashing)

If you wish to program other User codes return to step 4
Or
To return to the Unset condition press 0

this is for the led version.