This twoway intercom system is designed for clear, reliable communication through glass or similar barriers, making it ideal for environments where safe, efficient interaction is essential. Built for performance and convenience, it offers precise volume control, durable construction, and versatile connectivity. Key Features and Benefits: Independent volume control for both the inside and outside units, allowing adjustments to suit each environment without affecting the other. Unique dynamic sound indicator ensures clear audio monitoring and realtime feedback. Separate inside and outside volume knobs make it easy to achieve the sound balance for different noise levels and settings. 2.2m (6.5ft) extension cable between the main unit and auxiliary unit provides flexible installation options. Sturdy metal sleeve and stainless steel wire protection tube safeguard cables against wear and damage, ensuring longterm durability. Easy installation: requires only a small hole of approximately 0.7 inches in the glass to pass the connection cable from the external unit to the host. Versatile voice input capability: connect the signal input port to computers, mobile phones, or other audio devices to play messages or announcements directly through the system. Applications: 1. Bank teller counters – Enable clear, secure communication between staff and customers without compromising safety or sound quality. 2. Service windows at ticket offices or reception desks – Provide quick, intelligible exchanges in busy environments while maintaining physical barriers. 3. Hospital reception or pharmacy counters – Allow staff to relay important information to patients without removing protective glass screens. Specifications: Inside and outside volume control knobs Dynamic sound indicator Cable length: 2.2m (6.5ft) between units Protective stainless steel wire tube Installation hole size: approximately 0.7 inches Signal input port compatible with computers, mobile phones, and other audio devices This intercom system is designed to combine ease of use, robust construction, and dependable audio performance, making it a practical solution for secure, clear communication in professional settings.