The SKM 100 G4-D is a professional-grade handheld transmitter designed for use with the Sennheiser evolution wireless G4 100 Series. Engineered to meet the needs of demanding live sound environments, the SKM 100 G4-D is compatible with a selection of Sennheiser’s well-regarded microphone capsules, including the e 835, e 845, e 865, e 935, and e 945. Its robust yet lightweight aluminium housing ensures durability and reliability during frequent use in production, broadcast, and performance settings. The SKM 100 G4-D supports efficient wireless synchronisation with receivers via infrared, enabling quick configuration and stable signal transmission. Designed to operate within the UHF spectrum, it offers a wide 42 MHz bandwidth and access to 1680 selectable frequencies, supporting up to 20 compatible channels. This makes it suitable for multi-channel setups in professional audio environments where reliable wireless communication is essential. The transmitter’s maximum range of up to 100 metres provides the flexibility needed for larger venues and event spaces. Furthermore, with an adjustable RF output power of up to 30 milliwatts, subject to local regulations, the SKM 100 G4-D delivers consistent transmission performance. Ideal for system integrators, rental companies, and audio professionals, this transmitter supports high-quality vocal reproduction while maintaining stable connectivity in complex RF conditions.