... conveniently; It is adopting 2.4G digital wireless technology; 1. This digital wireless audio transceiver R&D by ... SOYO technology development Co., Ltd with 2.4G digital wireless transmission technnology.2. We can use ... Frequency: 2.400-2.483GHz2. Channels: 99, 30, 20 and 6 channels are available for choice; ... a wide range of input voltage supporting.7. Digital volume adjustment to 127 grades.8. with ...