INTERFON - Window Intercom with Anti-Feedback Micro-earphone Input Mute Button for Window and Interior The window intercom facilitates communication through windows or partitions. This window intercom amplifies the voice in both directions, improving communication and reducing the effort needed to converse. Conversations become easier in places where there is a separation between people due to protective windows or noisy environments. It allows for hands-free communication. It features independent volume control for the microphone and the window, allowing for better adaptation to user needs. For privacy at the station, it has a mute button for both the interior and the window. Easy installation and maintenance. Ideal for ticket sales windows, banks, cash registers, control posts, highway access, parking lots, etc. Specifications Features - Window Intercom - Bidirectional Sound (dual direction) - Automatic Communication Control - Internal Intercom Priority - Anti-Feedback System - LED Operation Indicators (desktop unit) - Optimal Microphone Usage Distance: 20 cm - Micro-earphone Input - Installation on glass using double-sided adhesive (included) Power - 2 × 5 W maximum Controls - On/Off Switch - Independent Volume Control (window and interior) - Independent Mute Button (window and interior) Inputs - 1 × Intercom