teko ASTRA ZITADEL, Quick Start Manual

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alerting initiated in voice alerting areas;
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remote notification via GSM and PSTN channels and Internet. For this purpose
Astra-8945 Pro supports on-board installation of Astra-GSM, Astra-PSTN and
Astra-LAN modules.
4.5. RADIO NETWORK SPECIFICS
Astra-8945 Pro Control Panel has embedded transceiver RVZ and supports connection
of up to 7 external wireless zones extenders WE 2.4 GHz or WE 433 MHZ, each of them
is an own network coordinator. The number of supported WE 433 MHz extenders is
limited to 4.
WE 2.4 GHz networks operate under IEEE 802.15.4 ZigBee Pro standard. Each wireless
network has its own proprietary set of parameters stored in non-volatile memory of the
corresponding coordinator.
Each WE 2.4 GHz wireless network supports up to 250 wireless devices such as routers
(RTR), detectors and alerters. RTRs are intended to extend coverage range of the
wireless network due to 16 levels of signal retransmission and increase communication
stability between wireless devices and central Control Panel. RTRs also provide
information flows dynamic routing within network.
WE 433MHz networks work under frequency range of 433.92 MHz
± 0,2% with support of
only one leve
l of signal retransmission. The network topology is “tree”. Signal
retransmission is provided by the same WE 433MHz extenders switched to repeater
mode.
Each wireless device can belong to one network coordinator only.
All wireless devices of all wireless networks are recorded in a single list in the Control
Panel memory.
4.6. RS-485 INTERFACE FEATURES
System devices are connected via RS-485 interface of TIA / EIA-485-A standard.
System devices` drivers (MAX3085 or HVD2x) allow connecting of more than 100
devices with the interface length of up to 1.5 km without taking special measures on