The RF-Explorer frequency counter is a device used to measure and display the frequency of radio frequency signals. It is compact and portable, making it convenient for field use. The frequency counter has a wide frequency range, allowing it to measure signals from 15 MHz up to 2.7 GHz. It has a high accuracy of ±10 ppm and a resolution of 1 Hz. The device features a clear LCD screen that shows the measured frequency in real-time. It also has a built-in rechargeable battery, making it suitable for long-term use. The RF-Explorer frequency counter is a reliable tool for professionals in the field of radio frequency analysis and measurement.