[. . . ] [. . . ] Items in BOLD are keys on the alarm panel which need to be entered in the order stated. User codes RESET - PROG FUNCTION - USER CODE (1234) The DAY LED will flash. Handy for front and back door zones but can be a nuisance on frequent triggered zones. 3 to TEST EXTERNAL SIREN/ STROBE (the day LED will remain on) then :1 to test / silence SIREN or 2 to test STROBE. [. . . ] [. . . ]