PMI Model No. ADA-0520F-65-OPT6G18G-PTB is a 6.0 to 18.0 GHz, Portable Adjustable Threshold Detector. This amplifier features an on/off swtich that is located on the front panel. This unit operations on 220 to 230 VAC and is supplied with a 6 foot EU 2-prong style power cord.