... sensitivity 4.8digits LED display Digital Frequency Meter,HC-F1000L, frequency from 10Hz~1GHz,digital display Model F1000CFrequency measurementsChannel ARange ... ~1GHz 20mVrms 1GHz~1.3GHz 50mVrmsImpedance Approx. 50ΩMaximum voltage without damage : 3VTime baseFrequency 10MHzStability Better than ± 2x10 ... 3V~5VGeneral Display 8 digit 7mm red LED display with decimal point,gate, overflow, kHz, MHz and µs ...