Synchronize your pulsed laser sources with highest accuracy: the Menlo Systems RRE100 provides state-of-the-art phase lock electronics. It's a complete, user-friendly system that allows for plug & play use. We have developed the Repetition Rate Synchronization for the patented, Nobel Prize awarded Optical Frequency Synthesizer technology. The RRE100 has been field-tested in this highly demanding environment enabling measurements with precisions never reached before.