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©2008 by RF Monolithics, Inc. SEM2411 - 3/15/08
DEVELOPER KIT
(Info: click here)
Hazardous Location, Class I Div I
SEM241 1 H L (h azardous l oca tion)
products are ready to be deployed in
hazardous location s. These C l ass I Div I
rated sol uti ons are idela for oi l and ga s
applicat ions. The only access hole tha t
comes on the box is th e ant enna
connect i on on top. The c ust om er then
chooses where to dr ill fo r power, data
and/or con tr ol conduit acc ess to
maximize installation flexibility.
The SEM 2411 HL products can function
as high sp eed bridge be t ween two 10/
100BaseT Ethernet networks or pr ovi de
wireless connectivity between an
Ethernet master bridge and multiple
Ethernet remote bridges.
SEM241 1 H L pr ovi d es a 1, 23Mbps dat a
rate. SEM products ensure errorless data
via CRC error checking and ARQ
(au t omat ic ret ransmiss i on of err ored
packe ts).
Features:
• High Speed: Up to 1Mbps throughput
• Network Ethernet devices (sensors,
PLCs, computers) wirelessly
• Long Range: 1.5 miles using a 4” unity-
gain dipole antenna. Easily extended
using gain ant ennas.
• Proven frequency hopping technology
• Standard Ethernet 10/100BaseT in terface
Benefits:
• Excellent immunity to jamming and
multi-path fading
• No user site license required anywhere in
the world
• Packaged for rugged industrial use
• 30OC to + 70OC operation
• Allows for deployment in hazardous
locations
• Low cost version available
High Speed
Spread Spectrum
Ethernet Radio
Modem Family
SEM2411 Series
SEM2411X
SEM2411D
SEM2411DX
SEM2411LC
SEM2411X/DX SEM2411 HL
.The SEM2411 series of products are very high speed/long range wireless networking products from RFM. Operating in the globally license-free
2.4GHz band, the SEM pr oducts are d esigned to prov i de high-speed w i re l ess connectivity between Et her net device s. Typical uses include
Ethernet bridging, SCADA networks, PLC networking, and other industrial automation or data collection applications. There is also a low cost
version available.
Rail Mount
The SEM2411/D/X off ers a DI N -
rail mount version, making
connection to PLCs or other
automation devices a snap. The
enti r e SE M2 41 1 pr od u ct fa mi ly i s
Class I D iv isi on 2 certified,
allow ing deployme nt in
haza rdous locations.
NEMA 4X Remote
Assembly
The SEM2411/D/X puts the
radio in a NEM A 4X remote
assembly that can be located
up to 300 feet from the Ethernet
connection. This allows optimal
radio plac em ent without the
need for lon g R F cable runs .
SEM2411D SEM2411 LC
Low C ost
The SEM2411LC can be
deploye d as a lo w cos t re m ot e
bridge usi ng a standard
SEM2411 as th e ba se bridge.
The SEM2411LC can fu nction
only as a slave device and must
commu ni cate with a sta ndard
SEM241. A SEM 2411 can
support up to 62 SEM2411LCs.
The SEM2411LC ra di o is
housed in a N EM A 4X r em ot e
assembly that can be located
up to 100 feet from the Ethernet
connection. This allows optimal
radio plac em ent without the
need for lon g R F cable runs .
The SEM2411LC remote radio
assembly includes an integral
6dB patch antenna, removing
the need for expensive,
external antennas.
The SEM2411LC offers 1 Mbps
of data throughput, either point-
to-point or p oi nt -to- m ul t ip oint .
www.RFM.com E-mail: info@rfm.com Page 2 of 3
©2008 by RF Monolithics, Inc. SEM2411 - 3/15/08
SEM2411 series of products use RFM fourth generation proprietary frequency hopping technology. Major industrial powerhouses such as Group
Schneider, Siemens, and GE have learned they can depend on RFM products for their customers. SEM products offer extraordinary data throughput
combined with outstanding range, coverage, and link reliability. The SEM products can operate easily in extended range applications with gain antennas.
The SEM2411 series can function as a high speed bridge between two 10/100BaseT Ethernet networks (see figure 1). SEM241 1 series products can also
provide wireless connectivity between an Ethernet base station and multiple Ethernet remote modems (see figure 2). Gain antennas can be used to extend
range and coverage. The SEM241 1 series products offer 1 Mbp s of dat a throughput, either point-to-point or multi-point. SEM241 1 products ensure errorless
data via CRC error checking and ARQ (automatic retransmission of errored packets).
Figure 1
Figure 2
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©2008 by RF Monolithics, Inc. SEM2411 - 3/15/08
Specifications
SEM2411 SEM2411X SEM2411D SEM2411DX SEM2422 LC
Data Throughput 1Mbps
Total Available Over-the-air
Bandwidth 1.23 Mbps
Interface 10/100BaseT
Network Topologies Point-to-point and multipoint
Repeater Use HN-2010 -
Frequency Range
(Multiple 803.11b-friendly
hopsets available) 2401MHz - 2471MHz US & ETSI
2406MHz - 2445MHz France
2401MHz - 2471MH z
US & ETSI
2400MHz - 2452MH z
France
RF Modulation GFSK
RF Output Power +8dBm / +18dBm at the RF Connector Software Selectable +20dBm / +30dBm
(includes antenna
gain) software
selectable
Power +9Vdc - +30Vdc +12Vdc - +30Vdc +9Vdc - +30Vdc +12Vdc - +30Vdc +9VDC
Enclosure Material Aluminum Aluminum
(network interface unit)
UV stabilized
polycarbonate
(remote radio unit)
ABS ABS
(network interface unit)
UV stabilized
polycarbonate
(remote radio unit)
Enclosure Size 201 x 144 x 53 201 x 144 x 53
(network interface unit)
130 x 79 x 35
(remote radio unit)
140 x 118 x 48 140 x 118 x 48
(network interface unit)
130 x 79 x 35
(remote radio unit)
130 x 130 x 60
(network interface unit)
130 x 79 x 35
(remote radio unit)
Operating Temperature 0ºC to +70ºC 0ºC to +70ºC
(network interface unit)
-40ºC to +70ºC
(remote radio unit)
-30ºC to +70ºC -30ºC to +70ºC
(network interface unit)
-40ºC to +70ºC
(remote radio unit)
Certifications FCC, IC, CE Marked, UL Class I Div 2 FCC, IC, CE marked
Connectors
SEM2411D/X/DX SEM2411 LC
Power 2-Terminal Connector
Ethernet RJ-45
Configuration Port RJ-11
Antenna Reverse TNC 12dBi internal patch
Indicators
Power
Ethernet Transmit
Ethernet Receive
Link Status
Collision
RF Link
