3. Digital crystal oscillator frequency reference, more stable, more anti-interference; 2. This product can not only output 7.830Hz wave, but also increase the programmable frequency modulation technology, can be adjusted in the range of 0.001Hz - 200KHz frequency (can also be used as an ordinary programmable digital signal generator). 1. Using DDS algorithm, the frequency step value can be up to 0.001HZ, good frequency stability. 4. Power supply interface using DC5.5*2.1 interface, easy to use, USB terminal can be inserted into the power supply or USB charging head or other USB power supply device work., Weight: 0.40344593946 pounds, Manufacturer: Tuidzljd