TOA WT-5810 ไมโครโฟนไร้สาย UHF Wireless Portable Tuner
Space Diversity Receiver Compact design for shelf-mount applications Scanner function Transmitter battery status display 16 selectable channels
*1 Frequency range may vary by area (between 690 to 865MHz). *2 0dB = 1V
http://www.toa-products.com/international/download/specification/wt5810_sa1e.pdf