Kessel SG 400 V Mono Original Operation Manual page 56

Diaphragm pressure switch for Duo systems
Connect the ends of the diaphragm pressure switch's leads to terminal [12].
56
Overview of connections for Duo diaphragm pressure
switch
Wire colour
pink
grey
yellow
green
brown
white
[12]
Installation and operating manual
Name on PCB Terminal colour
white
Alarm
blue
white
Ein2
blue
white
Ein1
blue
Duo
pk
gr
yw
gn
bn
we
010-532_05