Altronix Pace4KL is a SPE (Single Pair Ethernet) 4-port T1L Media Adapter/Switch that enables connecting up to four (4) 10Base-T1L, IEE802.3cg compliant devices such as Security/Industrial/BMS/Elevators/HVAC Controllers and sensors, etc. to an Ethernet network. Long distance headend switch to remote-end device cabling can be achieved to over 1km (1,000m, 3,280 ft.). Pace4KL can be used in a typical star configuration. Up to four (4) Pace4KL can be daisy-chained to further expand the network. In addition to new SPE (UTP) Ethernet network installations, upgrading of legacy networks, i.e. LONworks, RS485, 4-20mA Control Loops, etc. can be achieved by using the existing two wire cabling, thus saving rip-out & reinstallation costs. Operationally, Pace4KL is connected to a switch at the headend and is powered by the 12/24VDC power supply. Pace4KL passes network data from the switch via UTP up to 1km (1,000m, 3,280 ft.) to the remote T1L devices.