The WM-D5200 Digital wireless microphone employs an electret condenser microphone capsule and is suitable for any applications. This wirelss microphone employs a digital transmission system that is effectively immune to interference. Futher, not only does TOA's unique information concealment technology (Encryption Setting function) ensure high confidentiality and security against eavesdropping, but their code setting and transmission output such as use of the same transmission channel between adjacent areas.