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I+
21
22
23
11
12
31
32
24
25
26
CPU
EEPROM
5725A & D
1
1
2
2
3
3
4
4
44
46
45
43
42
41
R1
R2
mA
VREG
5...17 V
f
in
14 5725V104-UK
Block diagram
I
Output
Common
Relay 1 N.O.
Relay 1 N.C.
Common
Relay 2 N.O.
Relay 2 N.C.
Supply
Supply
21.6...253 VAC
or
19.2...300 VDC
Option D
Gnd.
Option D
Freq.
detector