The Sennheiser SZI 1029-10-US-B features a high-power radiator for use with all wideband and narrow-band modulators which is available in 5 watts and 10 watts radiating power. The radiator is automatically switched on by the RF carrier and can cover areas of up to 800 m² (5 W variants) or 1600 m² (10 W variants) in single-channel operation. It also has High-quality GaAlAs transmitting diodes that have been arranged in independent groups to ensure reliable transmission. A malfunction indicator is triggered when the radiating power is reduced by more than 30%.