Termination Resistors are required on a NMEA 2000 network and are placed at each end of a network trunk cable. Like the double-ended cordsets, the termination resistors are waterproof and continue to function even while submerged in the bilge. Diagnostic versions indicate correct polarity at a glance to ensure power connections have been made properly Screw connector for positive connnection Termination resistors are used to terminate both ends of the trunk line Specifications:Data Interface: NMEA 2000Connection Gender: FemaleNMEA 2000 Connectors: TerminatorsBox Dimensions: 1″H x 1″W x 2″L WT: 0.12 lbsUPC: 873804002354