- DLT 400 Transceiver & DLR 400 RCH Receiver - The Digi-Wave system is a digital spread-spectrum (DSS), simultaneous two-way wireless listening system. Using it's frequency-hopping algorithm, it avoids interference and is a very secure method of communication. The Digi-Wave communication system allows users to listen and talk to one another wirelessly in a variety of scenarios.A Digi-Wave system consists of at least one transceiver (DLT 400) and various combinations of transceivers and receivers (DLR 400 RCH or DLR 400 ALK). Combinations of one or more DLT's and DLR's can be used to facilitate different events, depending on what needs to be spoken and what needs to be heard. Typical scenarios include: Guided Tours - with one or more tour guides (2-way), with audience participation (2-way), or without audience participation (1-way) Language Interpretation - one or more interpreted languages transmitted to audience (1-way) Intercom - with up to six people able to speak simultaneously, and even more listening Hearing Assistance - featuring boosted audio for improved comprehension Note: The DLR 400 RCH is rechargeable. If alkaline batteries are preferred, see the DLR 400 ALK. - EAR 022 Surround Earphone - Around-ear speaker earphone. Hangs on outside of ear. Excellent sound quality. Can be used with all Williams Sound receivers and Pocketalkers . Rigorously tested and approved for quality, reliability and compatibility with Williams Sound systems. - MIC 158 Dual-muff Headset Microphone - Headset microphone with TRRS 3.5mm plug for use with Digi-Wave DLT 400 transceiver only. - CHG 412 Charging Bay (12-Bay) - 12-bay drop in charger for DigiWave DLT 400 transceiver and DLR 400 RCH receiver - CCS 054 Carry Case - The CCS 054 is ideal for protecting and transporting large DigiWave, FM or IR systems. It has a lower foam insert with 60 slots, and an open-bay style top insert. Slots can hold single PPA Transmitters or Receivers, or can hold two Digiwave devices per slot. It has an extendable handle and bottom wheels for easy transport. Ideal for conferences, tour guide systems, or overseas shipping. Compatible with all Williams Sound body-pack transmitters and receivers.The CCS 054 replaces the CCS 049.Replacement Case: CCS 052Replacement Foam: 1 set FMP 049Optional: FMP 044: Open Bay Foam Insert - CCS 061 Silicone Skins with Lanyard and Wrist Strap - Silicone skins for Digi-Wave DLT 400 transceiver and DLR 400 RCH receiver, with lanyard and wrist strap.