The ZTX-MO2RC Digital Wireless Handheld Transmitter from Sony features an interchangeable unidirectional microphone capsule and is designed for use with DMZ wireless systems. The ZTX-MO2RC can transmit 24-bit linear PCM digital data in 128-bit encryption to provide secure and safe use. Its has two RF transmission modes to select from, wide band hopping and narrow band hopping, allowing you to choose the mode that will provide the least amount of interference based upon the RF environment you are in. An integrated attenuator allows you to select from 0, 6, or 12dB of reduction directly from the microphone. The ZTX-MO2RC has a metal body designed for durability.