Compact and Design:this kit is easy to handle and transport. High Display:Five-digit LED display ensures precise frequency readings. Versatile Power Options:Supports USB 5V, DC power, or 9V battery for flexible powering. Ease of Use:Simple circuit design with in-line components for easy assembly. 50mhz Frequency Counter|50mhz Counter|Wide Frequency Measurement Range:Measures 1Hz to 50MHz, perfect for diverse electronic applications., Manufacturer: Duanthry