Black Box LBH240A-HD-SC-24 Fast Ethernet Hardened Switch, 24VDC, DIN Rail Mount

Black Box LBH240A-HD-SC-24 6-Port Fast Ethernet Hardened Temperature Switch, Multimode, 2 km

Unlike the Ethernet switches in your wiring closet or computer center, the Ethernet switches at the edges of your network have to put up with the bumps and dirt that happen out in the real world. The LBH240A-HD-SC-24 switch featured here is a Hardened model, but Black Box also offers Standard and Extreme versions of the Heavy-Duty Edge Switches. Because all three types work together seamlessly, you can use the inexpensive Standard Switches in protected office environments and choose the more robust Hardened or Extreme Heavy-Duty Edge Switches for harsh locations at your network's edge.

Ideal for use in dusty or dirty environments, this Hardened Heavy-Duty Edge Switch is a tough, 6-port Ethernet switch that enables you to expand your network into harsh factory floor environments. It's rated for a temperature range of -13 and +140° F (-25 and +60° C), and the sturdy, metal case functions as a heat sink so no internal airflow is needed for cooling. A sealed case resists contaminants such as dust, dirt, moisture, smoke, and insects.

This Multimode model supports up to 2 kilometers (1.2 miles) between switches and is available with SC connectors. It is literally plug-and-play. All copper ports are autosensing for speed and duplex, adjusting to the connected device automatically. Plus, the UTP ports feature Auto MDI/MDI-X, eliminating the need for crossover cables. The switch has two full sets of LED indicators: one set on the front for viewing convenience when the switch is DIN rail or wall-mounted and one set mounted in the end next to the media ports for easy viewing when units are in a rackmount tray. The LBH240-HD-SC-24 features non-blocking switching architecture with a 2K MAC address table. The 128K buffer memory makes it easy to interconnect 10- and 100-Mbps devices.

The LBH240-HD-SC-24 features Link-Loss-Learn (LLL) for fast network recovery when using the switch in a redundant application. In a normal network situation where you have a primary link and a backup link, the network can take as much as a few minutes to recover after the primary link goes down. This is because, when the link breaks, the switch will use its old MAC address table to try to send data to the disabled port. However, if a link breaks with LLL in place, the switch senses the disconnect and instantly clears its MAC address table, forcing a new address table that includes the new link.

This DC-powered unit has internal screw terminals for connecting DC power.

Key Features

• Two 100-Mbps fiber ports and 4 10-/100-Mbps RJ45 switch ports
• Fiber interfaces are MM, SC, 2km range
• Suitable for dusty or dirty environments with a temperature range between -13 and +140º F (-25 to +60º C)
• 24VDC power input
• Includes DIN rail mount kit
• 1 Year Double Diamond™ Warranty (Standard) included. Extended warranty available. Contact Westward Sales