Nady ENCORE1-HT N 1-Channel VHF Wireless Microphone System with Hand-Held Mic Available on selected frequencies in the VHF high-band (171-216 MHz) for interference-free, long-range performance Half rack receiver design with detachable front panel antennas RF and AF 5-LED displays for monitoring incoming signal strength and audio level; balanced XLR and unbalanced adjustable " jack output Noiseless transmitter On/Off switching Off/Standby/On switch allows convenient audio muting with the transmitter on Low-battery LED indicator flashes once for Unit On; lights steady for low-battery alert