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a1/a2
c
b1
b2
+V
0V
NO
NC
C
a1/a2
c
b1
b2
+V
0V
FAA--MSR-420
N
O
N
C
C
L
SN 0300 A
AUX1 LSN1 AUX2 LSN2
+ – a– b+ + – a– b+
a1/a2
c
b1
b2
+V
0V
NO
NC
C
FAA-MSR 420
EN54-13
+ U
-U
8 . 5 -- 33 VDC
76
en | Wiring
Modular Fire Panel
2016.07 | 12.6 | F.01U.009.201
Wiring Guide
Bosch Sicherheitssysteme GmbH