DIY Kit RF 1Hz-50MHz Crystal Oscillator Frequency Counter Meter Digital LED USA

Features: Measurable frequency range: 1 Hz -50 MHz; Most commonly used to measure the oscillation frequency of the crystal; Five Accuracy Resolution (eg 0.0050 kHz, 4.5765 MHz, 11.059 MHz); Automatic range switching, without artificial switching; Modified programmable frequency settings for the measurement of radio transceivers and other equipment; Selectable power-saving mode within 15 seconds if there is no significant change in the frequency automatically turn off the display; You can use a common USB interface, power supply, can also use an external power supply or 9V battery. A small number of elements, all in-line components, installation is simple. 32.768KHZ crystal can not be measured, the condition is limited only tested 4-20MHZ crystal can be measured, 48MHZ also can be measured, but because this is the use of octave harmonic oscillator, so 48MHZ crystal displays measuring fundamental frequency 16MHZ. You can also IN and - direct input frequency signal (ground) between mea