Product Overview

The Williams AV DWS PCS 2 400 is a two-person wireless personal communication system built on the Digi-Wave 400 digital spread-spectrum platform. It pairs two DLT 400 transceivers with two MIC 144 headset microphones for full-duplex, hands-free two-way communication a portable wireless intercom for team teaching, interpretation, production support, and staff coordination. Operating license-free on the 2.4 GHz band with frequency hopping, the system needs no base station, rack-mount hardware, or installation, and it serves as a cost-effective alternative to conventional two-way radios.

Product Description

The Digi-Wave 400 Series is a digital spread-spectrum (DSS), simultaneous two-way wireless communication system. Unlike push-to-talk radios, Digi-Wave supports full-duplex conversation both parties can speak and hear at the same time, like a phone call which keeps communication natural during live instruction, interpretation, and event production. The frequency-hopping algorithm avoids interference from Wi-Fi and other 2.4 GHz devices, and optional 87+128-bit encryption with a PIN code and settings lock secures conversations in courtrooms, hospitals, and corporate facilities.

Each DLT 400 transceiver includes a built-in microphone, a 3.5 mm headset mic input, a 3.5 mm TRRS headphone output, and USB-C line input/output, with an OLED display for channel, group, and battery status. The included MIC 144 headset microphones keep both users hands-free. Internal lithium polymer batteries deliver up to 16 hours of talk time and recharge over USB-C in about five hours; the included DW ACC PAC power kit covers charging in the field.

The system also scales: the platform supports up to six simultaneous talkers and an unlimited number of listeners, so additional DLT 400 transceivers or DLR 400 receivers can be added later for larger teams, guided tours, or interpretation covering one floor language plus up to 14 translated languages. Operating range reaches up to 900 ft (274 m) depending on site conditions.

System Includes

(2) DLT 400 transceivers
(2) MIC 144 headset microphones
(1) DW ACC PAC4
(1) CCS 043 system carry case
(1) CCS 061 BK black silicone skin
(1) CCS 061 GR grey silicone skin

How It Works

Need a talk-and-listen pair instead of two full transceivers? See the DWS PCS 3 400 RCH transceiver-plus-receiver kit, or browse the full Williams AV collection at Creation Networks.

Key Features

• Full-Duplex Two-Way Audio Both users speak and hear simultaneously, unlike push-to-talk radios, for natural hands-free conversation.
• Two Complete Transceivers Each DLT 400 includes a built-in mic, headset input, headphone output, and OLED status display.
• Digital Spread-Spectrum RF Frequency-hopping operation on the license-free 2.4 GHz ISM band avoids interference without FCC licensing.
• Encrypted Transmission Optional 87+128-bit encryption, a secure PIN code, and a settings lock protect confidential conversations.
• Expandable Platform Add transceivers or receivers later for up to six simultaneous talkers and unlimited listeners.
• Long Operating Range Coverage extends up to 900 ft (274 m) depending on environmental conditions.
• Rechargeable Batteries Internal lithium polymer cells provide up to 16 hours of talk time and recharge over USB-C in about five hours.
• Hands-Free Headsets Included Two MIC 144 headset microphones keep both users’ hands free during work.
• Carry Case and Skins Included The CCS 043 case plus grey and black silicone skins protect and identify the units in daily use.

Typical Applications

• Training room
• Broadcast studio
• House of worship
• Government space
• Commercial meeting space

Technical Specifications

DLT 400 Transceiver

DW ACC PAC Power Kit

Frequently Asked Questions

How is this different from a two-way radio?

Digi-Wave is full duplex: both users talk and listen at the same time without pressing a button, like a phone call. Conventional two-way radios are half duplex and require push-to-talk, which interrupts live instruction and interpretation.

Does the system require an FCC license?

No. It operates license-free on the 2.4 GHz ISM band using digital spread-spectrum frequency hopping, with no frequency coordination required.

Can I add more users later?

Yes. The Digi-Wave 400 platform supports up to six simultaneous talkers and an unlimited number of listeners. Add DLT 400 transceivers for talkers or DLR 400 receivers for listen-only participants.

Is the link secure enough for confidential conversations?

Yes. Optional 87+128-bit encryption, an encryption PIN, and a settings lock are available, suitable for courtrooms, healthcare, and corporate environments.

How do the transceivers charge?

Each DLT 400 charges over USB-C in approximately five hours using the included DW ACC PAC power kit, and is also compatible with the optional CHG 412 12-bay drop-in charger.

Will it interfere with facility Wi-Fi?

The system uses frequency-hopping spread spectrum across 24022476 MHz, designed to coexist with Wi-Fi and other 2.4 GHz devices while keeping the audio link stable.

What warranty applies?

Williams AV covers the transceivers with a 2-year warranty against component failure and manufacturing defects, with 6 months on internal batteries and 90 days on the power kit.