The 68M4-20^ from ARRA Inc. is a RF Variable Attenuator with Frequency 7 to 11 GHz, Attenuation Range 20 dB, Power 5 W, Peak Power 64.77 dBm, Insertion Loss 0.5 dB. Tags: Module with Connectors, Continuously Variable, Rotary, Digital, Motorized. More details for 68M4-20^ can be seen below.