Dual-Homing Hardened Edge Switch with two multi-mode SLCL-type (single mode LC long reach 40km) 100Mb fibre ports and four 10/100 RJ-45 switch ports with auto-cross and auto-negotiating support. Alarm contact for power monitoring. The two fibre ports support LLL for use in self-healing redundant LANs. Two sets of LEDs for viewing from any direction. Compact package, industrial rated for factory floor environments. Terminal block for -48VDC (range 30V to 60V) power connection with extended temperature range (-40