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Harding Instruments has developed several products that are distributed for general use as enhancements and interfaces on Echelon LonWorks networks. All of our LonWorks products are available directly from our factory. Just ask for one of our sales representatives for further information. Free Topology Repeater
The FTR-120 is a four port Free Topology Repeater that is used to extend LonWorks network capacity and distance. It supports large installations with many nodes, or nodes spread over distances exceeding Echelon's cable length specifications. Any data received on one port is retransmitted on other ports making the repeater transparent to the system. Call our Sales & Marketing department for pricing and delivery information.
Discrete I/O Module
Harding's DIO-110 series of discrete input/output modules offers a cost effective means to incorporate supervised inputs and solid-state outputs on LonWorks free topology data networks. These single unit rack mounted devices each offer 48 supervised contact inputs and 48 solid-state outputs. Each unit can be ordered in a current sinking, voltage source, or LED driver output configuration.
Card Reader Interface Module 
The CRI-100 Card Reader Interface module allows a card reader with a standard SIA-01 Wiegand interface to be connected to a free topology LonWorks network. The CRI-200 Rack Mount Dual Card Reader Interface allows two card readers with standard Wiegand interfaces to be connected to a free topology LonWorks network. The units includes redundant network connections, dual relay outputs, and supervisory circuitry.
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Echelon Corporations' LonWorks free topology networks are employed as internal data communication and control networks in some Harding Instruments systems. In order to meet the requirements of large systems and facilities, a repeater was developed that is now offered to, and widely used by, an increasing number of controls contractors.
