Zinc die-cast housing, nickel-plated Zinc die-cast housing, nickel-platedExcellent quality component , professional circuit design and low loss Excellent quality chip , professional program design and compatible with more types of satellite receiver DiSEqC 2.0 , supports bi-directional DiSEqC full control functions Select one of two satellite signals through DiSEqC commands supplied from satellite receiverUtilize one coaxial cable to transmit control instruction and satellite signal simultaneously Support DiSEqC “standby” command 

GT-21A DiSEqC Switch 2 in 1