GPS DISCiPLINED CLOCK GPSDO 10MHz 10M OUTPUT SQUARE WAVE RS232 OUTPUT:GPS NMEA POWER: DC11.7 -- 12.9V&lt; =15W, GPS ANT POWER:DC3.3V 10M OUTPUT :SQUARE WAVE,3.3Vpp, RS232 OUTPUT:GPS NMEA SIGNAL ACCURACY:above than OCXO 2 order of magnitude SIZE:W*H*D=107*55*122mm(INCLUDE BNC CONNECT) ACCESSORY:AC110-220-DC12V ADAPTER,GPS ANT.