The Nady UWS-100 HT Handheld Wireless System includes a UWS-100 receiver and a WHT Handheld Microphone Transmitter. The Nady UWS-100 receiver is a 100-channel, select UHF Wireless System with 100 frequencies per 24MHz wide band, that are manually selectable or by autoscan feature for open channels. The UWS-100 offers unsurpassed state-of-the-art PLL UHF performance with 120dB dynamic range and operation up to 500" line-of-sight. Other UWS-100 features include: ASC (Auto-Sync Channels) download which sends selected Group/Channel information to the transmitter using the IR sender for easy frequency synchronization; Tone Squelch circuitry for protection from RF interference; Front Panel Touch control buttons for ease-of-channel selection; ASC operation; and DigiTRU Diversity for maximum range and dropout protection. The Nady WHT Handheld Microphone Transmitter uses a Nady DM-10D unidirectional neodymium dynamic cartridge for optimum true sound, maximum feedback rejection and minimal handling noise.Nady UWS-100 Unsurpassed state-of-the-art PLL UHF performance with 120dB dynamic range and operation, up to 500 ft. (line-of-sight) 100 user-switchable UHF frequencies per band, or automatic open channel selection with convenient auto-scan feature ASC (Auto-Sync Channels) download feature sends selected Group/Channel information to transmitter via IR sender for easy frequency synchronization Front panel touch control buttons for ease of channel selection and ASC operation Tone Squelch circuitry for protection from RF interference DigiTRU Diversity for maximum range and dropout protection AF level displays and folding dual antennas Front panel On/Off button (with Power On LED indicator); full LED indicators including A/B diversity, Group/Channel selected, ASC transfer status, and bi color (green/red) Back panel balanced XLR fixed Mic Level and adjustable unbalanced ¼" jack audio Line Level outputs; squelch (RF mute) adjust; DC input jack; volume control for ease of operation Externally powered with included DC adapter (15 VDC 400 mA) Rugged all-metal receiver designed for long-term durability. WHT Handheld Microphone Transmitter Operates on a separate single frequency in the VHF 170-216MHz band Features the Nady DM-10D unidirectional neodymium dynamic cartridge for optimum true sound, maximum feedback rejection and minimal handling noise Off/Standby/On switch allows convenient audio muting with transmitter on Low-battery LED indicator flashes once for Unit On; lights steady for low-battery alert Uses one 9V alkaline battery for 15+ hours operation