SWJ-12-T81-3P is a WR-12 motorized single pole, eight throw (SP8T) transfer switch matrix with a TTL driver that covers the frequency range of 60 to 90 GHz. The matrix includes seven E-plane four-port DPDT switches that are mounted on a base-plate. Unused port of each switch is terminated by matched load to which makes each switch absorptive. The switch matrix has typical insertion loss of 2.6 dB and the typical adjacent-port isolation of 60 dB. Each WR-12 waveguides port is connected to a waveguide to 1.35 mm Female end-launch transition. The bias and control signal is supplied by a 9 pin Micro-D type connector.