2 CHANNEL ROTARY JOINT WITH SLIPRING, CONTACTLESS ETHERNET MODULES AND DUPLEX ENCODER. AUXILIARY SERVICES NON RECURRING ENGINEERING COSTS NRE ARE MANDATORY WITH FISRT ORDER. JUNTA ROTATIVA DE 2 CANALES CON ANILLO COLECTOR, MÓDULOS ETHERNET SIN CONTACTO Y CODIFICADOR DÚPLEX SERVICIO AUXILIAR