It is very small, only 1 square. Inch probably can't handle much current but has good isolation, could be good for switching between oscillators or antennas on an SDR receiver etc. Couldn't find anything that would say that to power it but seems to work fine on 12v and needs 5v to switch between ports. It is bi-directional, each port can be input or output. In testing it had about 2dB of insertion loss and 50dB of isolation, not the 60dB they claim.
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