Fermax PBX EXP - Characteristics of the Modules

1.4. Characteristics of the modules
1.4.1. The basic module of electronics Fermax PBX DP
The basic module of Fermax IP DP panel is supplied in two versions - with two
pushbuttons - Fermax IP DP-2 (a version for 1 or 2 pushbuttons) and two pushbuttons
with a possibility of expansion by additional 8 pushbuttons, i.e. each basic panel
allows connection of up to 10 pushbuttons with no further accessories of Fermax IP
DP panel. The basic module can be further expanded by additional 8 pushbuttons via
modules called Fermax PBX DP EXP and a keypad module called Fermax PBX KEY.
Picture 1 Schematics of connection and set-up elements