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Radio Expanders (Radio ZEX)
Radio Expanders cannot be used if the ID expansion option has been chosen. One
Radio expansion card may be fitted that will allow up to two Radio Receivers (8
channels each) to be fitted. The first Radio Receiver must be idented as receiver
number one. The second receiver is idented as receiver number 2. Each Radio
Receiver is capable of using up to eight radio detectors.
Radio Expander Card to Control Panel.
Control Panel
Radio Expander
EXP1
Pin1 12V
+12V
Pin2 0V
0V
Pin3 SAD1
SAD1
Pin4 SCLK
SCLK
EXP2
Pin3 SAD2
SAD2
Once the Radio Expander Card has been connected to the GardTec 872 control panel
it should be connected to the Radio Receiver as follows:-
Radio Expander Card to Radio Receiver Wiring
Red
Red
Black
Black
Yellow
Yellow
Green
Green
Notes: Further instruction are supplied with Radio Expander Card
Zones occupied by receiver 1 are 91 to 98
Zones occupied by receiver 2 are 171 to 178
Page
46
GardTec
872
Wiring Connections
872.qxd 05/11/2003 15:01 Page 46