PMI Model No. PS-255-2G18G-8B-SFF-OPT25 is a 2.0 to 5.0GHz 8 Bit Digitally Controlled Phase Shifter with capability for phase shifting from 0° fo 255° with resolution as fine as 1.0°. This unit has a typical insertion loss of 3 dB and a typical VSWR of 2.0:1. The DC Voltage requirement is +12 V to +15 V with typical current draw of 200 mA. The unit is supplied in a housing measuring 2.0" x 2.1" x 0.5".