Wireless Masthead & Data BoxThe mast head transmitter is completely wireless and is supplied with a base unit, which is powered by the vessel's 12Vsupply, the base unit receives wind speed and direction data from the masthead transmitter and sends it to any compatible NMEA display unit.Wireless wind speed and direction data to any compatible NMEA display The masthead transmitter requires only occasional bright daylight falling on the solar panel to top up its internal battery. It will operate for 2000 hours without further solar charging from its fu lly charged battery.Easy insta ll ation with mast in place no wires to run downSimple masthead alignment through base unitLight weight - 190 gramsSpecifications:Sleep time > 15,000 Hours *Operating time > 2,000 Hours *Charging time < 150 Hours of bright daylight* Fully charged with no further daylightNMEA 0183 4800 Baud0/P Level 0 to 12 voltfrom 220 ohm source resistance.NMEA data sentence MWVSupply voltage 6 to 16 volts. (Nominal 12 volts)Supply current 17mAFuse 1 Amp.DisplayWind speed and direction data to any compatible NMEA deviceThe Clipper Wind Repeater disp lay is presented in the industry standard 11Omm square case. It boasts an exceptionally large and clear display with 60 segments for full 360 degree direction indication.Display Unit SpcificationsSupply voltage Nomina l12V DCNMEA 0183 input sentence MWV9 levels of display backlightingDisplay case size 110 x 11OmmDepth behind panel 30mmConsumption, 1OmA+ (1OmA for display illumination max)This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.