Overcome background noise and distance The Williams Sound DWS TGS 23 300 is a one-way, wireless tour guide system in the 2.4 GHz band. It is designed for tour groups up to 23 members. The kit enhances communication between tour guide and group. It helps overcome background noise and distance from the tour guide. The system can be used in factories, museums, tourist attractions, or bus tours. Group members have listen-only capabilities.