Garmin GT54UHD-TM Ultra High-Definition Scanning Sonar All-In-One Transducer [010-12909-00] Marine Navigation & Instruments | Gauge Accessories GT15M-IH transducer is ideal for

GT15M-IH transducer is ideal for boats that want to install the transducer inside a fiberglass hull and not on the transom where cavitation could cause issues

hard-tops and other positions aloft

the FM4800 does not require an external GPS source to enable its DSC functionality

Hermetically sealed reed switch encapsulated in polyurethane

Garmin GT54UHD-TM Ultra High-Definition Scanning Sonar All-In-One Transducer [010-12909-00] Marine Navigation & Instruments | Gauge Accessories GT15M-IH transducer is ideal forGT54UHD TM Ultra High Definition Scanning Sonar All In One Transducer All In One Transducer One transducer provides the highest resolution ClearV and SideV scanning sonar images available and amazingly clear high wide CHIRP traditional sonar High wide CHIRP traditional sonar provides remarkably clear target separation and definition See incredibly detailed images of fish and structure up to 200 below your boat with 800 kHz ClearV sonar Two SideV sonar