SILENT KNIGHT 4821 Installationshandbuch Seite 64

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Model 4821/4820 Control/Communicator Installation Manual
4-20 150964
4.15 Zone Installation
4.15.1 Zone Hardware Specifications
The chart below lists all input zone hardware types available with the 4821/4820 modules.
4.15.2 Maximum Number of Zones per System
The maximum number of zones that can be connected to the 4821/4820 is 400.
These zones can be a combination of internal zones, 4815, 4825, 4421, and 4860C touchpad
zones.
Hardware Module Description
4821/4820 16 internal zones are built into the 4821/4820 main system board.
4825 Hardwire Zone Expander Each 4825 adds up to 64 hardwire zones. These zones have all the same
features as 4821/4820 internal zones.
4815 Serial Zone Expander Each 4815 adds up to 128 serial SmartSensor zones. The differences
between the SmartSensor zones and all other zones used in the 4821/4820
system are described in detail in the 4815 tabbed section of this binder
(part number 150909).
4860C Touchpad Zones Two input zones are built into the 4860C touchpads. These zones have all
the same features as 4821/4820 internal zones (except that the fastest
response speed, 10 milliseconds) is not available. The installation is the
same as the 4821/4820 internal zones. See Sections 4.15.5 and 4.15.6.
Note: 4421 cannot be used with
the 4820 control panel.
4421 Door Access Module
Two input zones are built into the 4421. These zones have all the same
features as 4821/4820 internal zones (except that the fastest response
speed, 10 milliseconds) is not available. The installation is the same as the
4821/4820 internal zones.
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