The Sennheiser SKM 2000 Handheld Transmitter (Black) Aw: 516 to 558 MHz is a full-featured wireless condenser microphone with switchable transmission power, intuitive menu navigation, an easy-to-read graphic display and external charging contacts for charging the optional rechargeable batteries directly. This transmitter is designed for use with the EM 2000/2050 Receiver. In addition, Sennheiser Control Cockpit Software (download) offers easy handling, control, and maintenance for the Digital Wireless System. It provides a global overview of all network-enabled devices, shows all status information, and makes setting adjustments very easy.