The QWZ Series from QuinStar Technology Inc is a Waveguide Switch with Frequency 18 to 110 GHz, Insertion Loss 0.4 to 0.8 dB, Isolation 55 to 60 dB, Supply Voltage 15 to 28 V, Current 1 to 2 A. Tags: Electromechanical. More details for QWZ Series can be seen below.