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2 of 2

6/12/2007
#26595

724-746-5500

   blackbox.com

FEATURES

• Simple to install and configure.

• Choose from copper, fiber, or wireless

models.

• Dual serial ports are switch selectable 

to RS-232, RS-422, or RS-485.

• Configure each serial port individually

via Web browser.

• Password security keeps out intruders.

OVERVIEW

Dual Serial Bridges enable you to easily connect two serial

devices to your 10BASE-T, 100BASE-FX, or 802.11b Ethernet
network.

Use a simple DIP switch to set the dual serial ports to

RS-232, RS-422, or RS-485. The serial ports are individually
configurable and manageable through any Web browser 
with a baud rate programmable for speeds from 110 bps 
to 230.4 kbps. You can also upgrade the firmware via a Web
browser. Because the bridges are password protected, you
never have to worry about unauthorized access.

The bridges include a configuration and management

utility. An Auto Discovery function enables you to find any
Dual Serial Bridge connected to your network.

The watchdog timer interrupts a “freeze” in case the

system gets hung up.

Status LEDs and activity indicators help with installation,

monitoring, and diagnostics.

The bridges are ideal for industrial applications. They

feature an extended temperature range and are DIN rail
mountable with the optional DIN Rail Mounting Kit (DR125).

Order the appropriate interface adapters to adapt a

bridge’s DB9 serial interface for RJ-45 or terminal strip
connections.

Ethernet Dual Serial Bridges

These bridges feature an RJ-45 10BASE-T interface for

connection to a 10BASE-T or 10BASE-T/100BASE-TX switch.

Fiber Dual Serial Bridges

Fiber Dual Serial Bridges feature a multimode or single-

mode interface for connection to 100BASE-FX Ethernet. They
enable you to access one or two serial devices over very long
distances. Multimode models send data up to 2 kilometers
(1.2 mi.); single-mode models send data up to 20 kilometers
(12.4 mi.). Additionally, because fiber is immune to electrical
interference, they’re ideal for use in industrial areas with
electrically “noisy” machinery.

Wireless Dual Serial Bridges

Choose wireless for use in areas where running cable 

is inconvenient. Wireless Dual Serial Bridges are 802.11b
compliant and are compatible with your 802.11b and 802.11g
wireless access points. The bridges include an antenna. The
standard RSMA antenna connector supports many other
antennas for extended range and performance. Wireless Dual
Serial Bridges include WEP 64- and 128-bit encryption for
security in addition to password security.

Item

Code

Ethernet Dual Serial Bridges, 10-BASE-T 

with 110-VAC Power Supply

LES300A

with 220-VAC Power Supply

LES300AE

Fiber Dual Serial Bridges, 10BASE-FX

Multimode, ST, 2 km

with 110-VAC Power Supply

LFS400A

with 220-VAC Power Supply

LFS400AE

Single-Mode, SC, 2 km

with 110-VAC Power Supply

LFS402A

with 220-VAC Power Supply

LFS402AE

Wireless Dual Serial Bridges, 802.11b

with 110-VAC Power Supply

LWS100A

with 220-VAC Power Supply

LWS100AE

You may also need…

DB9 to RJ-45 RS-232 Adapter

LA126

DB9 to RJ-45 RS-422/485 Adapter

LA127

DB9 to Terminal Strip Adapter

LA128

DIN Rail Mounting Kit

DR125

TECH SPECS

Baud Rate — Programmable: 230.4, 115.2, 57.6, 38.4, and 19.2 kbps; 

9600, 4800, 2400, 1200, 600, 300, 150, and 110 bps 

Data Format — Programmable: 5, 6, 7, 8 bits 
Environmental — Operating Temperature: -4 to +158°F (-20 to +70°C); 

Storage Temperature: -40 to +185°F (-40 to +85°C); 
Relative Humidity: 95%, non-condensing 

Flow Control — Hardware (RTS/CTS) or software (X-ON/X-OFF, None) 
Protocols — TCP, UDP, IP, ICMP, HTTP, TFTP, ARP, DHCP Client, SNMP (get) 
Serial Parity — Programmable: Even, Odd, None, Mask, Space 
Serial Stop Bit — Programmable: 1 (default), 2 Bits 
UART — 4096-byte buffer per direction 
CE Approval — LES300AE, LFS400AE, LFS402AE, LWS100AE only 
Connectors — LES300A, LES300AE: (2) DB9 M; (1) RJ-45;

LFS400A, LFS400AE: (2) DB9 M; (1) pair of ST;
LFS402A, LFS402AE: (2) DB9 M; (1) pair of SC;
LWS100A, LWS100AE: (2) DB9 M; (1) RSMA antenna

Indicators — LEDs: Power, Alarm, Link, Activity, RS-232, RS-422, RS-485 
Power — LES300A, LFS400A, LFS402A, LWS100A: 110-VAC, 60 Hz external 

power supply; 

LES300AE, LFS400AE, LFS402AE, LWS100AE: 220-VAC, 50-Hz external 

power supply 

Size — LES300A, LES300AE: 0.9"H x 4.5"W x 3.5"D (2.3 x 11.3 x 8.9 cm);

LFS400A, LFS400AE, LFS402A, LFS402AE: 0.9"H x 4.5"W x 4.1"D 

(2.3 x 11.3 x 10.5 cm);

LWS100A, LWS100AE: Without antenna: 0.9"H x 4.6"W x 3.5"D 

(2.3 x 11.7 x 8.9 cm) 

Weight — LES300A, LES300AE, LFS400A, LFS400AE, LFS402A, LFS402AE: 

0.6 lb. (0.3 kg);

LWS100A, LWS100AE: 0.7 lb. (0.3 kg)

LWS100A

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