Style:XNT 9 HW T Hummingbird 710274-1 XNT 9 HW T Transom Mount Transducer - Dual Spectrum CHIRP Narrow Beam - 25 Degrees, 180-240 kHz Wide Beam - 42 Degrees, 140-200 kHz Temperature Sensor Transom Mount. COMPATIBLE UNITS: HELIX 5 CHIRP G2 -GPS-equipped models only HELIX 7 CHIRP G2/G3 -GPS-equipped and CHIRP DI G2 models HELIX 7 CHIRP G2N/G3N -All models HELIX 8 CHIRP G3N -All models HELIX 9 CHIRP G2N/G3N -All models HELIX 10 CHIRP G2N/G3N -All models HELIX 12 CHIRP G2N/G3N -All models ICE HELIX CHIRP G2/G2N -All models