7
The code
T
he four code digits are determined by fitting wire
jumpers, see figure 1.0.
D
rawing 1.1 shows the connections for code 1234 as an
example.
F
Attention :
the wire jumpers that build the code must
be as close to the pcb as possible, because other-
wise they will touch the aluminium front panel!
The code sequence is determined by connecting the lines
A, respectively B, C and D to the connecting terminals
(keys 1 through 9) at the inside of the pcb, where line A is
the first code, B the second code and so on. The unused
keys (normally 5) are connected to line N.
Determining the code
