Williams AV DWS COM 6 PRO 400 – 6-User Wireless Intercom System is backordered and will ship as soon as it is back in stock.
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Product Overview
The Williams AV DWS COM 6 PRO 400 is a six-user Digi-Wave 400 wireless intercom system configured for high-noise environments such as live production, broadcast, and industrial training spaces. All six DLT 400 transceivers operate in full duplex, so the entire team can speak simultaneously without push-to-talk delays, and the system runs license-free in the 2.4 GHz band. MIC 157 headset microphones and a heavy-duty transit case make this the PRO-grade six-position crew communication package.
Product Description
The DWS COM 6 PRO 400 pairs six DLT 400 transceivers with six MIC 157 headset microphones chosen for intelligibility in high-noise environments, plus a CCS 042 heavy-duty system carry case and color-coded silicone skins (one grey, five black) for quick role identification. The DLT 400 is a digital spread-spectrum (DSS) transceiver whose frequency-hopping algorithm (2402–2476 MHz FHSS) avoids interference from the Wi-Fi and RF traffic typical of commercial venues, while 87-bit plus 128-bit encryption with PIN protection secures conversations in courtrooms, government spaces, and corporate facilities. Up to six people can talk at once — the full capacity of this kit — making it a direct, cost-effective alternative to licensed two-way radio intercom systems. Each unit delivers up to 16 hours of talk time per charge from its internal lithium polymer battery and covers up to 900 feet depending on conditions. Like all Digi-Wave 400 systems, the hardware is multi-mode: reconfigure the same six transceivers for language interpretation (one floor language plus up to 14 interpreted languages), guided tours with audience talkback, or hearing assistance. Listen-only positions can be added with DLR 400 ALK receivers at any time. See the full Williams AV collection at Creation Networks for receivers, chargers, and integration accessories.
How It Works

System includes: (6) DLT 400 transceivers, (6) MIC 157 headset microphones, (6) DW ACC PAC4, (1) CCS 042 heavy-duty system carry case, (1) CCS 061 GR grey silicone skin, (5) CCS 061 BK black silicone skins.
Key Features
- Six-User Simultaneous Full Duplex — All six positions can talk at once, supporting natural open-mic crew communication during live production and training.
- High-Noise Headset Microphones — Six MIC 157 headset microphones provide hands-free pickup suited to loud production and industrial environments.
- License-Free 2.4 GHz DSS Operation — Frequency-hopping spread spectrum avoids interference and eliminates FCC licensing and frequency coordination costs.
- Encrypted, PIN-Protected Audio — 87-bit plus 128-bit encryption keeps communication confidential in legal, government, and corporate facilities.
- Up to 16 Hours of Talk Time — Internal 1800 mAh lithium polymer batteries with smart charging support a full event day per charge.
- 900-Foot Operating Range — Coverage up to 274 m (site dependent) spans large venues, backstage areas, and multi-room facilities.
- Multi-Mode Platform — The same hardware handles intercom, interpretation with up to 14 language channels, guided tours, and hearing assistance.
- Heavy-Duty Transit Case — The CCS 042 case protects the complete system between deployments, rentals, and venue moves.
- Expandable and Backward Compatible — Add DLR 400 receivers for listeners, and interoperate with 300 Series devices via 87-bit encryption mode.
Typical Applications
- Broadcast studio and live production crews
- Auditorium and house of worship technical teams
- Government space and courtroom communication
- Training room and multi-purpose room instruction
- Commercial meeting space event support
Technical Specifications
| Transceiver (DLT 400) 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 |
| Case Material | Black ABS plastic |
| Battery Type | Lithium polymer with built-in smart charge; 1800 mAh |
| Battery Life | Up to 16 hrs talk time per charge @ 1ch Tx and 1ch Rx |
| Charge Time | Approx. 5 hours |
| Power Save | Auto sleep mode after 5 minutes of no RF signal |
| Operating Frequencies | 2.4 GHz (ISM band); 2402–2476 MHz FHSS |
| Audio Frequency Response (-3 dB) | Intercom mode: 100–7,200 Hz; other modes: 100–11,500 Hz |
| SNR | 73 dB (A-weighted, default Rx volume with mic input) |
| THD | 0.1% (default volume, 1 kHz) |
| Microphone Input | Internal mic (disabled when MIC jack engaged); 3.5 mm jack with electret bias, 63 dB adjustable gain range |
| Line Input/Output | USB-C, adjustable level |
| Headphone Output | 3.5 mm TRRS jack; 25 mW @ 32 ohms |
| Range | Up to 900 ft (274 m), depending on environmental conditions |
| Modulation | FSK |
| RF Output | 19 dBm typical |
| Security | 87-bit encryption (300 Series compatible), 87+128-bit encryption, encryption PIN, settings lock |
| Indicators | OLED display; talk LED ring; bi-color status LED |
| Charging Connectors | USB-C; two contacts for CHG 412 drop-in charger |
| Compatible Receivers | DLR 400 RCH, DLR 400 ALK; DLT 300 and DLR 360 with some limitations |
| Operating Temperature | 14º to 113ºF (-10º to 45ºC) |
| Approvals | FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty | 2 years against component failure and manufacturing defects; 6 months on internal battery |
Frequently Asked Questions
What makes the COM 6 PRO 400 suited to high-noise environments?
The PRO configuration ships with MIC 157 headset microphones rather than the standard MIC 144, providing better voice pickup for production floors, backstage areas, and industrial training spaces. The transceivers also offer adjustable sidetone and a 63 dB mic gain range for fine-tuning per user.
Can all six users really talk at the same time?
Yes. The Digi-Wave 400 platform supports up to six simultaneous full-duplex talkers, which matches this kit's six transceivers exactly — every team member has an open mic with no push-to-talk required.
Does the system require an FCC license?
No. It operates in the license-free 2.4 GHz ISM band with frequency-hopping spread spectrum, so there are no licensing fees or frequency coordination requirements at any venue.
How do I add listen-only users for training or interpretation?
Add DLR 400 RCH (rechargeable) or DLR 400 ALK (alkaline) receivers to the same encrypted group. In interpretation mode, the platform supports one floor language plus up to 14 interpreted languages.
Can it connect to an installed AV system?
Yes. Each DLT 400 has USB-C line-level audio I/O, and the DWD 401 Digi-Wave Connect breakout box provides balanced XLR in and out for integration with consoles, DSPs, and room audio systems.
What is the warranty?
Williams AV provides a 2-year warranty against component failure and manufacturing defects, with 6 months of coverage on the internal batteries.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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