XSONIC P79 Adjustable 200/50kHz Plastic In-Hull Transducer - 9-PinThis entry level in-hull transducer with an adjustable deadrise angle makes installation a snap.The 9-pin 600 W transducer has a depth of 800 to 1,200 ft; an operating frequency of 50 to 200 kHz; a beamwidth of 45 to 12 degrees; and a 0 to 22 degree deadrise.Transducer kit comes with installation instructions*. Follow the instructions carefully to avoid damaging your boat.*Fiberglass should be no more than 5/8" thick*Not recommended for cored hulls