HST-DFSBLTransom-mount dual frequency skimmer with built-in temperature sensor.Works with: LCX-110C LCX-111C HD LCX-17M LCX-20C LCX-25C LCX-26C HD LMS-335C DF LMS-337C DF LMS-339C DF iGPS LMS-480 X105C DF X107C DF X126DF X136DF X59DF Product : LOWRANCE HST-DFSBL T/M DUAL FREQUENCY Manufacturer : LOWRANCE PARTS Manufacturer Part No : 106-77 UPC : 042194524092