The WR137 Sheltered from Sector Microwave Industries is a Waveguide Switch with Frequency 5.85 to 8.2 GHz, Insertion Loss 0.02 dB, Isolation 60 dB, Supply Voltage -54 to 32 V, Current 0.5 to 1.5 A. Tags: Motorized. More details for WR137 Sheltered can be seen below.