Hotel telephones from the Teledex Opal series have a recognizable international design that is a legacy of the modern design of the rooms. The Opal series is available in one or two-line, analog, corded and cordless configurations with an optional speakerphone and is equipped with a red multi-function message waiting light and 0, 3, 5 or 10 programmable guest service keys. Teledex Opal DCT Series wireless sets support up to 3 additional AC powered RediDock handset charging stations, allowing your guests to charge their handset from multiple places in the room. . . all without the need for additional telephone connections in the room. Opal DCT series cordless telephones are also available with optional battery backup during power outages.