The 390 series of waveguide switches from M2 Global operate from 3.5 to 40 GHz. These waveguide switches have an isolation of over 55 dB, insertion loss below 0.15 dB and a return loss of more than 23 dB. They can handle a power ranging from 0.4 to 5 kW and have a switching time better than 70 milli seconds. The switches are designed to provide reliability in outdoor environments including freezing rain, sand, and dust. A mating connector is supplied with each switch. They are available with different driver voltage options - 12V, 24V, or 48V DC and 115V or 220V AC and two power connector options, for WR229 through WR62 - ITT KPTO2614-19P and for WR42 through WR28 - ITT KPTO2614-10P. These switches have a pressure rating of 20 psig, including driving head. Flanges can be selected from most common North American or metric types. They also have weather cap for manual override control.