["Description:\r\nbrand new and high quality\r\nProduct Color: See pictures\r\nDescription:\r\nThis is a PIC microcontroller based on the frequency meter, with a crystal measurement function and programmable addition and subtraction frequency settings, five digital display, easy and intuitive, all use of in-line components, the circuit is simple and easy to produce.\r\nCircuit characteristics:\r\nMeasurable frequency range 1 Hz -50 MHz\r\nCan measure the oscillation frequency of most commonly used crystal;\r\nFive precision resolution (eg 0.0050 kHz, 4.5765 MHz, 11.059 MHz);\r\nAutomatic range conversion, without human switching;\r\nProgrammable addition and subtraction frequency settings for the measurement of radio transceivers and other equipment;\r\nYou can select the power saving mode, if the frequency is not obvious changes within 15 seconds automatically turn off the display;\r\nYou can use the universal USB 5V interface power supply, can also use an external for DC power supply or 9V battery.\r\nThe number of components is small, all straight-line components, installation and commissioning simple.\r\nPCB size: 80 * 53 mm\r\nNo Retail Packages\r\nQuantity: 1Pc\r\nNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\nPackage includes:\r\n1Pc x 1Hz-50MHz Frequency Counter"]