E80 Multifunction DisplayE-Series delivers chartplotter, fishfinder, radar, and video in an easy to use networked navigation system. Featuring ultra bright displays, a customizable navigation interface, and super-fast networking.DSM300 "Black Box Sounder"Digital Sounder Module adds HD Digital technology to E-Series and C-Series multifunction displays. 600 or 1000 Watt operation depending on choice of transducer. Dual frequency 50//200 kHz. Patented Raymarine HD Digital sounder technology.RAY 218 VHFLarge LCD, superior audio quality, and oversized volume squelch and channel selectors, the Ray 218 is easy to use. Comes equipped with the latest generation of SC101 DSC (Digital Selective Calling).Raystar 125 GPS SensorThe Raystar 125 Satellite Differential GPS Receiver provides pinpoint accuracy to Raymarine's C-Series and E-Series Multifunction displays. Outputs either SeaTalk or NMEA 0183, and is fully compatible with Raymarine SeaTalk instruments and autopilots. SeaTalk hs Crossover CouplerEngineered for the marine environment, the SeaTalk hs Crossover coupler provides a secure connection between any 2 SeaTalk hs devices. This device is commonly fitted on networks consisting of a single E-Series display with DSM300, or 2 E-Series displays with no DSM300. For networks with 3 to 8 devices, please choose the SeaTalk hs Network Switch.SeaTalk hs Network Cable, 5mRaymarine SeaTalk hs network cables provide waterproof, reliable, high-speed connections between E-Series components.