Williams Sound DWS TGS 20 400 ALK Digi-Wave 400 Series Tour Guide System

Save 10%
Williams Sound SKU: DWS TGS 20 400 ALK
No reviews

Sale price$5,985.00 Regular price$6,650.00


Digi-Wave 400 Series Tour Guide System for one guide and up to 20 listeners.

Includes: (1) DLT 400 transceiver, (20) DLR 400 ALK receivers, (1) MIC 144 headset microphone, (20) EAR 022 surround earphones, (20) BAT 010-2 AAA alkaline batteries, (1) CCS 056 26 system carry case, (1) CCS 061 GR grey silicone skin.

These days contactless communication is essential to get through our day-to-day lives. People are figuring out ways to work from home and socially distance, but what if this isn't possible in your line of work? Williams AV has you covered with the Digi-Wave 400, a full duplex portable, wireless 2-way, system for short range communication. The Digi-Wave is ideal for social distancing in a variety of applications including teaching, training, and interpreting. It can also be used in
courtrooms, classrooms, hospitals, restaurants and warehouses. In addition, the Digi-Wave400 is a cost-effective alternative to other expensive 2-way radios.

The Digi-Wave 400 system is a digital spread-spectrum (DSS), simultaneous two-way
wireless communication system. The system makes hearing easier in everyday situations by reducing background noise and compensating for poor room acoustics or distance from the sound source. Its frequency-hopping algorithm avoids interference and is a very secure method of communication. Every Digi-Wave System includes at least one two-way transceiver (DLT 400) and one or more receivers (DLR 400 RCH or DLR 400 ALK), depending upon the application.
The system is commonly used for intercom, with up to six people able to speak simultaneously and even more listening. It's also ideal as a human interpretation system that supports one floor language and up to 14 translated languages. Digi-Wave systems are also frequently used with guided tours - with
one or more tour guides (2-way), with audience participation (2-way) or without
audience participation (1-way listen only).

System Includes

(1) DLT 400 transceiver
(20) DLR 400 ALK receivers
(1) MIC 144 headset microphone
(20) EAR 022 surround earphones
(20) BAT 010-2 AAA alkaline batteries
(1) CCS 056 26 system carry case
(1) CCS 061 GR grey silicone skin

How It Works


  •  Portable digital transceiver with built-in mic
  •     Completely portable - no base station or rack-mounted components required
  •     Crystal-clear digital sound quality
  •     Use as a two-way wireless intercom or in one-way mode
  •     Accommodates six simultaneous talkers and an unlimited number of listeners
  •     Built for security. Optional 128+87 bit encryption, secure key code, lock for settings

BAT 010-2

Alkaline, 1.2 Volt  

CCS 056 26

Interior Dimensions 13.0” W x 18.0” L x 6.7”H (33 cm W x 46 cm L x 17 cm H)
Exterior Dimensions 15.7” W x 19.7” L x 7.2” H (40 cm W x 50 cm L x 18 cm H)
Lid Inner Depth 1.5” (4 cm)
Bottom Inner Depth 5.2” (13 cm)
Approx. weight (empty) 6.6 lbs (3 kg)
Material Copolymer
Minimum Temperature -40ºF (-40ºC)
Maximum Temperature 160ºF (71.1ºC)


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° – 113°F (-10° to 45°C)
Compatible Units DLT 400, DLT 300
Approvals: FCC, Industry Canada, RoHS 3, CE, WEEE, RCM, ANATEL, KC, Giteki
Warranty: 2-year warranty against component failure and manufacturing defects. See Full Warranty on the website for details

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
Color Black/Silver (Front/Back)
Case Material Black ABS plastic
Battery type Lithium Polymer with smart charge built into transceiver; 1800 mAH
Battery life Up to 16 hrs talk time per charge@ 1ch Tx and 1ch Rx
Power Save Auto Sleep Mode after 5 minutes of no RF signal from compatible devices
Charge time 5 hrs. approx.
System Voltages OLED 14VDC; RF 5VDC; Logic 3.3 VDC
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, default Rx volume with mic input )
THD 0.1 % (Default Volume, 1kHz)
Microphone input Internal microphone (disabled when MIC jack engaged) and 3.5 mm phone jack (sleeve) with electret microphone bias, adjustable gain with 63dB range.
Line Input USB-C, Adjustable level
Headphone Output 3.5 mm TRRS headphone jack; 25 mW, R 32 ohms
Audio Output Headphone: Max SSPL 90 111.8dB (EAR 013), 116.8dB (EAR 041) Line: USB-C, Adjustable level
Range Up to 900 ft (274 m) (depending upon environmental conditions)
Modulation FSK
RF Output 19 dBm Typical
Security 87-bit encryption (300 Series Compatible), 87+128 bit Encryption, Encryption PIN, Lock for settings
Side tone -6 dB below volume, tone variation (Off, Low and High settings available)
Indicators OLED
LEDs Red LED around Talk button when enabled; Bi-color, changing green and red LED at top
Charging Connectors USB-C; Two contacts for use with CHG 412
Compatible Receiver DLR 400 RCH, DLR 400 ALK, DLT 300 with some limitations and DLR 360 with some limitations
Operating Temperature Range 14º to 113ºF (-10º to 45ºC)
Approvals FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki
Warranty 2-years warranty against component failure and manufacturing defects. 6 months on the internal battery. See Full Warranty on the website for details.

EAR 022

Style Around-ear speaker
Plug 3.5mm mono
Cord 39"
Driver Size 23 mm
Nominal Impedance 32Ω
Freq. Response 20 - 20kHz
Weight 15g
Max Power Input 30 mW
Sensitivity 118 dB @ 1kHz


2 Years

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 before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. 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.

Customer Reviews

Be the first to write a review

Nationwide Audiovisual Services - Design, Installation & Support - A Partner You Can Trust

Creation Networks offers audiovisual & video conferencing services for projects of all sizes - from a single meeting room to a nationwide deployment. You can count on us for your audiovisual technology system's design, configuration, programming, installation, and support. It is important that you get Top Quality products from the best manufacturers, and then purchase from a trusted partner who tests and installs what they sell, giving you the best value. Our goal at CreationNetworks.net is to only represent the top products and test everything before recommending or selling our solutions.


Our AV experts have earned their professional certifications to design, build, and manage the best AV services for you. View Our Certifications

Product Selection

Choose from products and national brands to find the right technology for your needs. View Our Vendor Partners