Check the listing for details. RS-485 Interface - Isolated for TI-700K, TI-1680. Condition: New. Listed at 110.00 USD. This item is not available for purchase separately and must be purchased with one of the following compatible indicators or kits: \n \n TI-500 RF \n TI-500 RF SS \n TI-700K \n RF Kit Alpha XR \n RF Kit Delta XR \n RF Kit Foxtrot XR \n GUARDIAN Series RF Floor Scales \n Wireless Weigh beam Scales \n \n