Features: Professional 100MHz Frequency Counter with SJ8K24P T chip and 0.91" display ensures high precise measurements in a compact acrylic casing, ideal for electronics diagnostics and signals analysis. Features ±2.5ppm VC TCXO frequency base, customizable gate time (0.1/1.0s), and MHz/KHz/Hz mode switching for enhanced accuracy and readability in signals testing applications. Designed for engineers, technicians, and electronics enthusiasts requiring reliabled frequency measurement tools for circuit debugging, equipment calibration, or educational projects. Perfect for workshop environments, laboratory setups, or field repairs where portable 100MHz signals testers with /signals probe inputs ensures sensitive measurements across devices. Compact acrylic body with Type C power and auto saved settings simplifies operations, delivering lab grade precise in a pocket sized frequency meter for on the go troubleshooting. Specifications: Frequency ranging: 200 Hz – 100 MHz Resolution: 10 Hz (0.1 second gate) / 1 Hz (1.0 second gate) Time base stability: ±2.5 ppm Frequency reference: 3.000MHz voltages controlled temperature crystal oscillator Current consumption: ≈30mA (5V power supply) Size: Approx.138x18x11mm/5.43x0.7x0.43inch Package Includes: 1pcs Frequency Meter 1pcs Power Cord note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.