Frequency synchronization means synchronizing or co-frequencying two devices to ensure their coordinated operation. In the case of vibration frequency meters, this process becomes important when two devices need to be synchronized, for example in machines running in parallel or to avoid frequency interference. To synchronize the frequency of two vibration frequency meters, a central control system is usually used, which receives and analyzes the input signals of both devices. This central system coordinates the frequencies produced by each device by fine-tuning the signals and matching them to be within a certain and stable range. In this way, the frequency of both devices works in sync. This synchronization is usually used in industries such as power plants, heavy machinery or transportation systems that require high precision and avoid frequency interference.