Williams AV DLR 400 RCH Digi-Wave 400 Digital Wireless Listening System Receiver, Rechargeable 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 is recharagble. If alkaline batteries are preferred, see the DLR 400 ALK.

Technical Specifications

Dimensions
4.22"W x 2.60"H x 0.50"D
(107.3 mm x 66 mm x 12.6 mm)
Weight
3.3 oz (94 g) including battery
Color
Black
Battery type
Lithium Polymer with smart charge built into transceiver; 1800 mAH
Battery life
Up to 32 hrs per charge @ 1ch Rx
Power Save
Auto Sleep Mode after 5 minutes of no RF signal from compatible devices
Charge time
5 hrs. approx.
Operating frequencies
2.4 GHz (ISM band); 2402 - 2476 MHz FHSS
Audio Frequency response (-3dB Level)
Intercom Mode: 100 - 7,200 Hz
Other Modes: 100 - 11,500 Hz
SNR
73 dB (A-weighted)
THD
0.1 % (Default Volume, 1kHz)
Headphone Output
3.5 mm TRRS headphone jack; 25 mW, R32 OHM
Range
Up to 900 ft (274 m) (depending upon environmental conditions)
Modulation
FSK
RF Sensitivity
-92 dBm
Security
87 bit encryption (300 Series Compatiable), 87+128 bit Encryption, Encrpytion PIN, Lock for settings
Indicators
OLED
LEDs
Bi-color, changing green and red LED at top
Charging Connectors
USB-C; Two contacts for use with CHG 412
Compatible Units
DLT 400, DLT 300 with some limitations
Operating Temperature Range
14 to 113F (-10 to 45C)
Approvals
FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki
Warranty
2 years parts and labor (90 days on accessories); 6 months on internal battery