Geekcreit® 1Hz-50MHz Crystal Oscillator Frequency Tester Counter Meter With Case

File: http://img.banggood.com/file/products/20160817023551SKU360318.pdf Features: Measurable frequency range: 1Hz to 50MHz Measurable signal frequency: up to 30V Can measure most commonly used crystal of oscillation frequency Five-digit accuracy resolution Automatic range switching Programmable frequency setting for measuring radio transceiver equipment Selectable power-saving mode, if there is no significant change in 15 seconds automatically turn off the display frequency Wide power supply range, you can use a common USB interface power supply, can also use an external power supply or 9V battery 5-12V Package Included: 1 x Frequency Tester With Case