Tester For Quartz Crystals And Oscillators Digital Frequency Counter 1Hz 50MHz High Sensitivity Tester Module Frequency Counter Module Power supply : USB 5V or DC 5-12V Digits , Resolution : Five Based on for PIC microcontroller can measure frequency of 1 Hz to 50 MHz. Five digits accuracy. Optional power-saving mode: automatically turns the display Note: Product is in parts . Designed to measure frequencies ranging from 1Hz to 50MHz, this kit offers a hands-on learning experience for students, engineers, and nology lovers. With its crystal oscillator measurement capabilities, it’s a dynamic solution for accurate frequency readings Frequency Range: 1Hz-50MHz 50 Mhz Crystal Oscillator Tester Diy Kit 5 Digit Tooteeru 50 MHz Crystal Oscillator Frequency Counter Tester - DIY Kit With 5-Digit Red LED Display PIC16F628 Based Frequency Counter They need to be assembled .