The Raymarine P79 Adjustable In-Hull Depth Transducer is ideal for trailered boats or for those who want to minimize drag. The adjustable design accommodates a wide range of deadrise angles, up to 22°. Sound waves are transmitted directly at the bottom, so strong echoes are reflected back to the transducer. The transducer can be used in conjunction with the ST69 speed and temperature sensor (part# E66019; sold separately). Removes easily in seconds for servicing or storage; only the base is bonded to the hull. The P79 is approved for use with fiberglass hulls no thicker than 5/8"; not for use with cored hulls. 10m (32.8 ft.) long cable. Part#: E66008.Compatible With The Following Echo Sounders:* SL Series: SL755RC, SL760RC , SL1250, and SL1250RC* HSB2 Plus Series: L755RC, L760, L760RC, L1250, and L1250RC* HSB2 HDFI Series: DSM250, L770D, L770DRC, L1260D, and L1260DRC Removes easily in seconds for servicing or storage Not for use w/ fiberglass hulls thicker than 5/8"" Cable is 10m (32.8 ft.) in length