D Debra Audio PRO Mono ER-202 UHF Dual Channel Wireless in Ear Monitor System…
The PRO UHF Mono Wireless In Ear Monitoring System: D Debra audio's new UHF system with phase-locked loop PLL. The frequency range is 510 MHz-580 MHz. The preset 100 frequencies for each channel can be switched at will, which can better avoid signal interference.