System description
Senstar LM100 Product Guide
Page 11
luminaires). In remote control mode, the alarm data is carried over the Silver Network to a host
security management system (SMS). Remote control mode enables the SMS to control the
gateway’s relays as output points to operate other security equipment. The input ports provide
inputs to the host SMS for reporting the status of auxiliary devices. In both modes, you can
configure the gateway’s input/output response according to your site-specific requirements.
•
Local control mode
- Hard-wired contact closure alarm data connections and input wiring
connections are made between the gateway and the annunciation equipment.
•
Remote control mode
- The alarm data communications are via the Silver Network. RS-422
copper wire data paths, fiber optic cables, or Ethernet cables connect the gateway to the Silver
Network Manager (NM). The NM handles the communication between the Senstar LM100
system and a host security management system.
The gateway supports the addition of two optional circuit cards on its expansion header. The
available option cards include:
•
network interface card - enables network communications and connects the gateway to a PC
running the Silver Network Manager
•
wireless gate sensor receiver card - provides wireless security monitoring of up to 4 gates
(also requires a gate sensor module on each protected gate)
•
I/O option card - either a dry contact input card (4 additional inputs) or a relay output card
(4 additional outputs)
Operating Frequency selection
IEEE standard 802.11 g stipulates the frequency spectrum used by various Wi-Fi based devices.
There is an overlap between the Senstar LM100’s 16 channel bandwidth and the 13 channels
used by 802.11 g. Although the Senstar LM100 bands and the Wi-Fi bands are designed to
coexist, the Wi-Fi devices often use a great deal of airtime which can limit the amount of time the
LM100 can use for mesh network communication. Therefore, if your site uses a Wi-Fi network you
should select an LM100 channel that does not overlap a Wi-Fi band in use at your site. In North
America, Wi-Fi channels 12 and 13 are not used, so Senstar LM100 channels 15 and 16 can be
used without potential Wi-Fi interference.
illustrates the frequency spectrum shared
between the Wi-Fi devices and the LM100 channels.
Note
For the Senstar LM100 to be part of a Silver Network based security
system, the gateway requires a network interface card.
Note
A Silver Network based Senstar LM100 can use local control mode to
operate the gateway’s inputs and outputs.
