TA Triumph-Adler P-3525 MFP - Manual (Page 145)

Setup and Registration
6-33
6
11 Press the  or  key to select the desired encryption
key number.
12 Press the OK key.
13 The sending system conducts encrypted transmission.
When encryption communication is conducted normally,
the machine decrypts the encrypted originals received
and prints the originals.
Encryption Key: a b
*********************
2 Key 02
3 Key 03 1 *Key 01