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 50MHzMeasurable signal frequency up to 30VCan measure most commonly used crystal of oscillation frequencyFive digit accuracy resolutionAutomatic range switchingProgrammable frequency setting for measuring radio transceiver equipmentSelectable power saving mode if there is no significant change in 15 seconds automatically turn off the display frequencyWide 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