P58 Depth Speed Temp T/M Transducer for CP370Recommended for small inboard/outboard boats, Raymarine's P58 Transom-Mount Transducer is an all-in-one solution for providing depth, speed, and water temperature readings to Raymarine's a-, c- and e-series multifunction displays with built-in sonar capability. The P58 supports dual frequency (50/200 kHz) operation and attaches directly to the transom of any outboard or stern drive boat. Features:Ideal for small inboard/outboard boatsDepth, speed, and temperatureSquare 4-blade paddlewheel improves speed accuracy