The WR187 Standard from Sector Microwave Industries is a Waveguide Switch with Frequency 3.95 to 5.85 GHz, Insertion Loss 0.02 dB, Isolation 80 dB, Supply Voltage -54 to 32 V, Current 0.5 to 2 A. Tags: Motorized. More details for WR187 Standard can be seen below.