Black Box LB303A 10BASE-T/100BASE-TX Hardened Ethernet Extender

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10BASE-T/100BASE-TX Hardened Ethernet Extender over vDSL, 1-Port


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  • Simple plug-and-play installation.
  • Saves wiring costs by using voice-grade twisted-pair copper wire—even phone wire you already have installed.
  • Uses symmetrical vDSL for speeds of up to 30 Mbps.
  • Transparent to network protocols.
  • Eight speeds with easy-to-read speed indicator LEDs on top of the extender.
  • Auto MDI/MDI-X on the Ethernet ports.
  • Autosensing for Ethernet speed and duplex.
  • Hot swap extender without powering down.
  • A switch configures the extender for local (CO) or remote (CP) use.
  • The 10BASE-T/100BASE-TX Hardened Ethernet Extender uses vDSL to provide an easy, inexpensive way to extend the reach of your Ethernet network over ordinary voice-grade UTP copper wire. Use the Hardened Extender for harsh environments and extended temperature ranges. Because you use your existing copper infrastructure, you save on cabling costs.
  • Extends 10- or 100-Mbps Ethernet up to 1.2 miles (2 km).
  • For use at extreme temperatures from -40 to +167° F (-40 to +75° C).
Distance (Maximum) On 24 AWG wire:
1 Mbps: 1900 m;
3 Mbps: 1800 m;
5 Mbps: 1600 m;
10 Mbps: 1400 m;
15 Mbps: 1200 m;
20 Mbps: 1000 m;
25 Mbps: 800 m;
30 Mbps: 700 m;
40 Mbps: 600 m;
50 Mbps: 300 m
Environmental Operating Temperature: -40 to +167° F (-40 to +75° C)
CE Approval Yes
Connectors (1) RJ-11, (1) RJ-45
Indicators LEDs: (1) Power;
(4) Speed;
(1) Ethernet Link/Activity;
(1) Ethernet Full Duplex;
(1) VDSL Error;
(1) VDSL Link;
(1) VDSL Local;
(1) VDSL Remote
Power Power supply sold separately:
PS002A: 100-240 VAC, 50-60 Hz input to 12 VDC output, DIN connector;
PS003A: 100-240 VAC, 50-60 Hz input to 12 VDC output, stripped ends for use with terminal block;
PSD012: 100-240 VAC, 50-60 Hz input to 24 VDC output, DIN-rail mount
Power Connectors DC Terminal block: 12-30 VDC;
DIN connector: 12 VDC
Size 2"H x 5.3"W x 4.3"D (5.1 x 13.5 x 10.2 cm)
Weight 1.8 lb. (0.8 kg)

Part code:

LB303A

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Black Box LB303A 10BASE-T/100BASE-TX Hardened Ethernet Extender

Black Box LB303A 10BASE-T/100BASE-TX Hardened Ethernet Extender

10BASE-T/100BASE-TX Hardened Ethernet Extender over vDSL, 1-Port