1) Enter Installer Code on the panel while disarmed (Default 4112) + 800
2) You Will now see 20 INSTALLER CODE if that was the correct installer code.
3) Press *25
0 = A
1 = B
2 = C
3 = D
4 = E
5 = F
6 = G
7 = H
8 = I
9 = J
# + 10 = K
# + 11 = L
# + 12 = M
# + 13 = N
# + 14 = O
# + 15 = P
4) Press *99 After the screen updates to the next field to exit programming
Note: GeoArm can change the installer code upon activation