teko ASTRA ZITADEL, Quick Start Manual

Page: 33 / 94

33
8. GENERAL RECOMMENDATIONS FOR INSTALLERS
8.1. WIRELESS PART OF THE SYSTEM
Astra-8945 Pro has embedded radio transceiver 2.4 GHz, which supports up to 250
wireless devices of different types.
Astra-8945 Pro allows connecting of up to 7 external wireless zones extenders WE 2.4
GHz with support of 250 wireless devices of different types by each one. Thus the full
capacity of the wireless part of the system is 2000 wireless devices.
Astra-8945 Pro also allows connecting of up to 4 external wireless zones extenders WE
433 MHz. 433 MHz wireless part of the system may consist of 192 wireless devices being
registered in one extender or distributed between 4 extenders.
Total amount of external wireless zones extenders of any type cannot exceed 7.
Astra-8945 Pro or WE 2.4 network supports dynamic routing of information flows within
the network, so that wireless devices are not strongly linked to each other and data
transmission routs are built automatically within the network through several levels (up to
16) of signal retransmission.
WE 433 network su
pports only one level of signal retransmission, but doesn’t support
dynamic routing function.
Wireless coverage range depends on the number and nature of obstacles inside the
protected facility and on operating frequency.
8.2. WIRELESS NETWORK 2.4 GH
Z
To ensure efficient operation of detectors and alerters at real facilities, special devices are
included into radio network that perform signal retransmission with the checkback and
dynamic routing while delivering messages to the Control Panel, delivering commands to
each alerter and checkback about command execution.
These devices are routers/repeaters Astra-Z-8845, Astra-Z-8745 and relay units Astra-Z-
8245.
There are some restrictions that are imposed on routers’ functions:

30 wireless devices per one router. At least one router/repeater per 30 wireless
devices must be registered.

2 remote controls Astra-Z-3245 per one router,