Efficient Functionality Extra wide 200 degree angle view. Built-in "Do not disturb" Display. Pleasing three-tone door chime. Mini-bar indicator system (optional.) Elegant Design Available in four beautiful finishes. Special surface treatment on request. Installs in just 10 minutes...no wiring required. Enduring Performance Patented technology Engineered by a renowned German electronics manufacturer High grade alloy Tamperproof UL Tested and FCC approved Copyright Hotel Gong Systems 2001. All rights reserved. Site designed and maintained by HGS HAM