Compact Digit CounterThis basic AC powered frequcny counter feaures a highly accurate timebase and selective gate times of 0.1 sec and 1.0 sec. To reduce pickup noise at low frequencies, use our Oscilloscope Probe Set.Specifications:Display: 7-digit LEDRanges: 0-200MHzResolution: 1Hz (max)Accuracy: ±0.1ppm + 1 digitSensitivity: 25Vrms