... RF POWER METER/MILLI-VOLT METER,RS-232 Interface, Option GPIB Interface,USB Interface, MTBF> 20000h SP2281 DIGITAL RF POWER METER/MILLI-VOLT METERProduct ... keys Produced by SMT, new type metal box MTBF:> 20000h RS-232 Interface, Option GPIB Interface,USB Interface Specification Frequency Range ... 5×10-6Size255mm×370mm×100mmWeigth3.5kg SP2281 DIGITAL RF POWER METER/MILLI-VOLT ...