Raymarine RVM-100 Transom Transducer. Designed for easy transom mounting on outboard-powered motor boats. The RVM-100 is a 4-channel, Wide Spectrum CHIRP transducer, with DownVision, SideVision, high-frequency CHIRP fish targeting, and 3D sonar inside. Also featuring a built-in fast-response water temperature sensor for quick, accurate readings. Featuring a rugged, marine-grade stainless steel mounting bracket with an integrated kick-up to prevent damage in the event of a strike with floating debris, rocks, or stumps. The RVM-100 can also be mounted onto stepped hull vessels using the optional stainless steel step-mounting bracket (A80479, sold separately!.)