SOLID GD-21C 2 in 1 DiSEqC Switch Features: Zinc die-cast housing, nickel-plated Excellent 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 the satellite receiver Utilize one coaxial cable to transmit control instruction and satellite signal simultaneously Support DiSEqC “standby” command