Buy BlackBox LBH240A-H-ST-12, Hardened Heavy-Duty Edge Switch

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Heavy-Duty Edge Switch, Hardened, (4) Copper + (2) Fiber Ports, Multimode, 12-VDC, ST

For industrial environments.
Feature two fiber ports and four copper ports to expand your network.
Tough steel case.
RJ-45 ports support autonegotiation, so you can easily attach any 10- or 100-Mbps device.
Available with many types of AC and DC power supplies.
Support both half- and full-duplex operation

Two sets of LEDs enable you to see status information from the front, top, or side.
Support VLAN tagging and spanning tree passthrough.
Include Link-Loss-Learn (LLL) feature for fast network recovery

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Technical Details

Altitude	-200 to 13,000 ft. (-60.9 to 3962.4 m)
Distance (Maximum)	Multimode models: 2 km (1.2 mi.); Single-mode SC models: 20 km (12.4 mi.); Single-mode LC models: 15 km (9.3 mi.); Single-mode, long-distance SC models: 40 km (24.8 mi.)
Enclosure	Steel
Humidity	5–95%, noncondensing
Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1p/q
Temperature Rating	Storage: -40 to +185° F (-40 to +85° C); Long-term operating: -13 to +140° F (-25 to +60° C); Short-term operating: -40 to +185° F (-40 to +85° C); Cold start to -4° F (-20° C)
CE Approval	Yes
Indicators	LEDs: Per Unit: (2) Power; Per Port: (2) LK/ACT, (2) F/H; Per Copper Port: (2) 10/100
Size	3.6"H x 3"W x 1.7"D (9.2 x 7.6 x 4.3 cm)
Weight	Switches: 0.8 lb. (0.4 kg); Power Supplies: 0.4 lb. (0.2 kg)

Altitude	-200 to 13,000 ft. (-60.9 to 3962.4 m)
Distance (Maximum)	Multimode models: 2 km (1.2 mi.); Single-mode SC models: 20 km (12.4 mi.); Single-mode LC models: 15 km (9.3 mi.); Single-mode, long-distance SC models: 40 km (24.8 mi.)
Enclosure	Steel
Humidity	5–95%, noncondensing
Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1p/q
Temperature Rating	Storage: -40 to +185° F (-40 to +85° C); Long-term operating: -13 to +140° F (-25 to +60° C); Short-term operating: -40 to +185° F (-40 to +85° C); Cold start to -4° F (-20° C)
CE Approval	Yes
Indicators	LEDs: Per Unit: (2) Power; Per Port: (2) LK/ACT, (2) F/H; Per Copper Port: (2) 10/100
Size	3.6"H x 3"W x 1.7"D (9.2 x 7.6 x 4.3 cm)
Weight	Switches: 0.8 lb. (0.4 kg); Power Supplies: 0.4 lb. (0.2 kg)

Note: Please read description carefully. Do not base your order on the picture presented.