Advanced Frequency Control: The SI5351A module offers a highly precise clock signal generation, adjustable from 2.5KHz to 200MHz, suitable for various RF applications Versatile Use: Perfect for use in amateur radio, telecommunications, and other electronic experiments where precise timing is crucial Supply voltage: and5V Output frequency F0=F1=2.5K to 200MHz F2 and F1 share a phase-locked loop, configurable frequency division ratio Output interface: SMA female Configurable minimum step: 1Hz (equipped with STM32and1.3-inch TFT) The product appearance and printed words depending on the batch, but this does not affect use Color: random, No designation accepted Material: PCB Package Contents: 1 x SI5351 Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.