Premium Edge Switch with two 100Mb multi-mode SLCL (single mode LC long reach 40km) fibre ports and four 10/100 RJ-45 switch ports with auto-cross and auto-negotiating support. Alarm contact for power monitoring. Ports 1 (fibre) and two (RJ-45) support LLL for use in self-healing redundant LANs. Two sets of LEDs for viewing from any direction. Compact package, rated for temperature un-controlled environments such as outdoors. Terminal block for 24VDC (range 18V to 36V) power connection with extended temperature range (-40