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Mounting
Install the included "rubber duck" antenna by screwing it onto the connector that extends from the top of
the 7835C. The final mounting site should be chosen so that:
• the wire lengths do not exceed the maximum wire lengths as specified in Table 4
• the minimum distance to other electrical devices is maintained
• the minimum signal strength level is observed
• there is access to the 7720P programming port & tamper switch
• all LED displays can be observed
• the antenna is free from any interference
Once the 7835C has been installed, programmed, and tested, anchor the radio permanently to the wall using
the screws included with the radio. Use the 3 mounting holes as shown in Figure 2. All 3 mounting holes
must be used. It is important to attach the unit securely so that it cannot be removed or accidentally
knocked off the wall after installation.
Wiring the 7835C
Observe the wire length/gauge limitations for all input zone, radio fault and power connections as listed in
Table 4.
Zone Options
For zone operation, set the jumper on P3 for Z5 and Z6 as shown in Figure 5.
There are a total of 6 input zones available on the 7835C.
• Zones 1 and 2 are selectable for either a (+V) or (GND) trigger with jumper P2.
• Zones 3, 4, 5 and 6 are set up strictly for a (+V) trigger. A positive voltage applied to these zones will
trigger an alarm. For added flexibility, each zone may be programmed individually to "invert" its input
so that a positive voltage is removed from the zone input to trigger an alarm.
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SCREW
MOUNTING HOLES
Figure 2. Mounting the 7835C
Table 4. Maximum Wire Run Lengths
Gauge
18
20
22
SCREW
Distance (ft)
300
200
125
– 23 –
WALL
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