The Provo A500 4" RCA Adapter, Male to Female, is a versatile accessory compatible with M201, M300, and M700 series video intercom monitors. It utilizes straightforward CAT5 LAN wiring and RJ45 connectors, ensuring seamless integration. Featuring full duplex hands-free digital voice communication, it delivers clear and natural sound quality thanks to electret condenser microphones. Installation is hassle-free, offering the flexibility of surface mounting or using the optional SOB-UNI desk adapter. Elevate your intercom system's performance with this reliable and easy-to-install adapter. Don't miss out, enhance your setup today!