Frequency Counter
Product Details:
 ● 2 model : 2Hz to 50 Mhz and 2Hz to 2GHz, 
●    Built-in STOPWATCH to measure duration.. 
●  8 digit 0.5" bright red display with accuracy of + 1 count + stable crystal controlled time base  Accuracy + X1000 LED for GHz.
●  Selectable attenuator of X0.1 (High voltage, low frequency)/ X1/ X10/ X50 (low amplitude, high  frequency). 
●  Two separate inputs with sensitivities of 300 mVpp and 50 mVpp min., RF I/P.
● Input impedance of 1Mohm.