Description Key Features: Streamline design: The main unit has an aluminum alloy shell, and the extension has a built-in speaker. This system has a simple connection for DIY operation. High quality: Features top-quality speaker and high-sensitive microphone. The metal tube microphone is ideal for counters and dual-way intercommunication. Good performance: Provides clear, natural voice output, with a switch for volume control. Advanced technique: Adopts advanced microcomputer technology from the U.S. Definite instruction: The indicating lamp shows the track’s working status. Simple operation I: Dual-way intercommunication without pressing a button. Simple operation II: Two knobs adjust the inside and outside volume. When the audio indicator lamp turns green, intercommunication can begin. Simple operation III: Record voice through the recording jack. Warranty: 1 Year
