Features: The frequency counter features a ±2.5ppm TCXO and 100MHz measurement capacity, delivering laboratory grade accuracy in a compact pen styles design ideal for radio frequency measurement and two way radio applications. Equipped with two gate times (0.1s/1.0s), MHz/kHz/Hz auto switching display, and two input option, this tool ensures versatile signals analysis with 1Hz resolution for critical timing evaluations. Designed for electronics engineers, radio technicians, and STEM educators requiring portable frequency verification in microcontroller systems, or educational lab environments. Perfect for field testing crystal oscillators in validating transceiver frequencies in two way radios, or conducting precise measurements in mobiles workshops and electronics classrooms. Its Type C powered operations (30mA@5V) and auto save settings enable uninterrupted workflows during extended radio frequency signals analysis, outdoor antenna testing, or portable electronics diagnostics. Specifications: Component:ABS Frequency ranging：200 Hz -100 MHz Time Base Stability：±2.5 ppm Frequency Reference：3.000MHz VC-TCXO (KDS) Operating voltages：4.5–5.5V (5V recommended) Current Consumption：≈30mA @ 5V Display：0.91" (8-digit capacity) Size:Approx.138x18x11mm/5.43x0.7x0.43inch Package Includes: 1pcs Frequency Meter 1pcs USB to TYPE C 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.