WT-2400 Series Light Weight Wireless Tour Guide System offers the perfect solution for performers, musicians , tour staffs and simultaneous interpreters. The system included light and portable type transmitter (WT-2400T) and light and portable type receiver (WT-2400R). It adopts UHF channel PLL (phase lock loop)frequency of synthesizer design enable to select multi-channel and let users to distinguish and operate easily through LCD panel display.