6403X5RSRDRF - 640,3 Weigh Bar, 5-pin connector w/ RS-232, RD40/XL and RF port

640\640XL Indicators: Model 640-640XL Indicators - Indicator: Multiple 3 or 4 Weigh Bar Connector (Weigh Bars plug directly into 640-XL) : 640,3 Weigh Bar, 5-pin connector w/ RS-232, RD40/XL and RF port - Avery Weigh-tronix Part number: 6403X5RSRDRF