Advanced Frequency Counter with 8-digit LED Display Features 8-Digit LED display Few switches, well operability Quickness, high resolution Specifications Frequency range :10Hz -1000MHz Display:: 8 Digits LED Gate time :0.01S / 0.1S / 1S Accuracy :+/- 1Hz +/-1 Count Figure +/- Time Base Accuracy Input sensitivity :10 Hz-10 MHz: 20mV (Channel 1); 10 MHz-100MHz: 25 mV (Channel 1) ;100 MHz-1000MHz: 25 mV (Channel 2) Input impedance:1Mohms at Channel 1, 50 Ohms at Channel 2 Max input voltage:250Vrms Channel1;5Vrms Channel 2 Max aging rate :+/- 5ppm / year Power input : AC 220V, +/- 10% (50/60Hz) Power consumption:approx. 5W Dimensions :230 (W)X210(H) X76 (D) mm Weight :1.8 kg