Function brief The use of micro-power consumption of the apparatus a high level of integration of high-speed embedded processors. The use of high-energy three 5 # alkaline dry batteries or 5 # rechargeable batteries , can be 0 ~ 4ma output current signal precision, 0 ~ 9999.9hz precision frequency signals can be output 24v dc power, to apply two-wire field devices; can accurate measurement of dc 0 ~ 24ma current signal and frequency signal. Widely used in valve positioned, transducer, digital display, etc. And the majority of manufacturers of industrial and mining enterprises, to replace imported high-precision portable signal generator.