Rechargeable Digi-Wave 400 Series Rechargeable Interpretation

Ideal Use Cases

The 21-Person Portable Digi-Wave 400 Series Rechargeable Interpretation System is configured for three presenters and 21 listeners. It is a practical fit for interpretation and wireless-listening sessions that need a defined presenter-to-audience setup without a permanent installation. The rechargeable format and portable case support repeat use across temporary meeting spaces, event rooms, and other locations where the equipment must be transported, charged, deployed, and stored. Its specified audience capacity also makes system planning straightforward when the operating requirement is known in advance.

Why Choose This Model

The model combines secure wireless operation with long-range coverage and rechargeable power. It operates in the 2.4 GHz ISM band from 2402 to 2476 MHz using FHSS and FSK modulation, with a stated range of up to 900 ft (274 m), depending on environmental conditions. Security options include 87-bit encryption for 300 Series compatibility, 87+128-bit encryption, an encryption PIN, and a settings lock. Listed battery performance reaches up to 32 hours per charge in one-channel receive operation, while approximate charging time is five hours.

Installation and Integration

The portable design is intended for deployment without a fixed system installation. Compatible equipment includes the DLT 400 transceiver and DLR 400 RCH receiver. Additional listed compatibility covers the DLR 400 ALK, plus the DLT 300 and DLR 360 with some limitations. USB-C connections support charging and adjustable line-level audio input and output. A 3.5 mm TRRS headphone output supplies 25 mW into 32 ohms. The microphone section provides an internal microphone that is disabled when the microphone jack is engaged, along with a 3.5 mm connection featuring electret microphone bias and adjustable gain over a 63 dB range. Charging specifications include 12 bays rated at 5 VDC and 0.5 A per bay, with charge status shown on the DLT or DLR. The universal DC adapter provides 5 VDC at 6 A and accepts 90-240 VAC through the listed TFP 066 power supply input.

Performance Highlights

Audio frequency response is 100-7,200 Hz in Intercom Mode and 100-11,500 Hz in other modes. The system is specified with a 73 dB A-weighted signal-to-noise ratio and 0.1 percent total harmonic distortion at default volume and 1 kHz. RF output reaches 19 dBm maximum, while the listed RF sensitivity is 92 dBm. Talk status is identified by a red LED around the Talk button, supported by a bi-color green and red LED at the top of the unit. Side tone operates 6 dB below the selected volume and offers Off, Low, and High settings. Auto Sleep Mode activates after five minutes without an RF signal from compatible devices. The specified operating temperature range is 14 to 113 degrees F (-10 to 45 degrees C).

What Makes It Different

This Digi-Wave configuration brings together support for three presenters, 21 listeners, encrypted 2.4 GHz transmission, rechargeable operation, and portable storage. The listed lithium-polymer battery uses smart charging built into the transceiver and has an 1800 mAh capacity. USB-C charging is supplemented by two charging contacts for use with the CHG 412. Published case specifications include a copolymer construction, 15.7 in W by 19.7 in L by 7.2 in H exterior dimensions, and an approximate empty weight of 6.6 lb. The charging enclosure is specified as black ABS plastic with a metal base.

Final Assessment

The DWS INT 4 400 RCH is a focused choice for portable interpretation requirements involving three presenters and 21 listeners. Its combination of up to 900 ft wireless range, multiple encryption controls, approximately five-hour charging, and up to 32-hour battery operation supports extended rechargeable use. It carries a two-year warranty, with cables and the power supply covered for 90 days, and lists CE, FCC, WEEE, RoHS, and CB approvals.