Williams AV DLR 400 ALK Digi-Wave 400 Digital Wireless Listening System Receiver, Alkaline Batteries Version

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

The DLR 400 RCH uses alkaline batteries. If a rechargable version is preferred, see the DLR 400 RCH.

Technical Specifications

Dimensions
2.36" W x 3.54" H x 0.63" D
(60 mm x 90 mm x 16 mm)
Weight
1.7 oz. (47 g) without batteries.
Frequency Band
2.4 GHz (ISM band)
Modulation
FSK
Case Material
Black ABS Plastic
Battery Type
2 x AAA Alkaline Batteries
Battery Life
Alkaline Disposable (BAT 010-2): Up to 30 hrs
Power Save
Auto Sleep Mode after 5 minutes of no RF signal from compatible devices
Audio Frequency Response (-3dB level)
Intercom Mode: 100 - 7,300 Hz
Interpretation and other modes: 100-11,200 Hz
SNR
74 dB (A-weighted)
THD
0.1% (typical)
Antenna
Internal
Range
Up to 900 ft (274 m) (depending upon environmental conditions)
Headphone Audio Output
3.5 mm TRRS jack with mono output for headphones, earphones, or neckloop
27 mW maximum @32 ohms
Display
LCD shows status: Battery Level, RSSI, Group/Channel #
Temp. Range
14 - 113F (-10 to 45C)
Compatible Units
DLT 400, DLT 300
Approvals
FCC, Industry Canada, RoHS 3, CE, WEEE, RCM, ANATEL, KC, Giteki
Warranty
2 years parts and labor (90 days on accessories)