HST-50/200-WSU Transom-mount dual frequency skimmer with built in temperature sensor (50 kHz 35 degree & 200 kHz 12 degree). Includes power cable. (25 ft cable) Compatible With: FishEasy 320 M56 S/MAP M68C S/MAP SeaChamp 1000C DF SeaChamp 2000C DF SeaCharter 500C DF SeaCharter 502C DF iGPS SeaCharter 640C DF SeaCharter 642C DF iGPS SeaFinder 240DF SeaFinder 250DF SeaFinder 320DF SeaFinder 480DF SeaFinder 500C DF SeaFinder 640C DF X67C Product : LOWRANCE HST-50/200-WSU TRANSOM MOUNT DUAL FREQ DUCER Manufacturer : LOWRANCE PARTS Manufacturer Part No : 106-49 UPC : 042194521992