Humminbird XTM-9-20-T. (710160-1). Brand New Includes One Year Warranty. . The Humminbird XTM 9 20 T is a trolling motor transducer with built in temperature sensor, dual beam and 20/60 degree cone angles. It operates at 200/83 kHz and includes 15 feet cable, trolling motor mounting hardware.. . XTM 9 20 T