Williams AV DWS TGS 20 400 ALK – Digi-Wave Tour Guide System for 21
Williams AV DWS TGS 20 400 ALK – Digi-Wave Tour Guide System for 21 is backordered and will ship as soon as it is back in stock.
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Williams AV DWS TGS 20 400 ALK – Digi-Wave Tour Guide System for 21
Product Overview
The Williams AV DWS TGS 20 400 ALK is a wireless tour guide system for one guide and up to 20 listeners, built on the Digi-Wave 400 digital spread-spectrum platform. It pairs a DLT 400 transceiver with 20 alkaline-powered DLR 400 ALK receivers, making it a practical tour guide audio package for facilities that prefer field-replaceable AA batteries over charging stations. Operating license-free on the 2.4 GHz band with frequency hopping, the system deploys with no installation, base station, or rack-mount equipment. Everything ships in a CCS 056 26 hard carry case for transport between venues.
Product Description
The Digi-Wave 400 Series is a digital spread-spectrum (DSS), simultaneous two-way wireless communication system. Its frequency-hopping algorithm avoids interference from Wi-Fi and other 2.4 GHz devices and provides a secure transmission path, with optional 87+128-bit encryption, an encryption PIN, and a settings lock. The guide speaks through the DLT 400 transceiver using its built-in microphone or the included MIC 144 headset microphone, and participants listen on DLR 400 ALK receivers fitted with EAR 022 surround earphones.
The ALK configuration is the right choice when charging infrastructure is impractical: each DLR 400 ALK runs up to 30 hours on two AAA alkaline batteries, so spare batteries in a pocket keep a tour program running all day with zero charger downtime. An LCD on each receiver shows battery level, signal strength, and group/channel number for fast troubleshooting in the field. Operating range reaches up to 900 ft (274 m) depending on conditions.
Beyond one-way tours, the same hardware supports two-way intercom with up to six simultaneous talkers and language interpretation with one floor language plus up to 14 translated languages, covering plant tours, museum and campus programs, courtrooms, and multilingual training. The system scales by simply adding receivers — the listener count is unlimited.
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) DW ACC PAC4
(1) CCS 056 26 system carry case
(1) CCS 061 GR grey silicone skin
How It Works
If you prefer rechargeable receivers with drop-in charging, see the DWS TGS 23 400 RCH system, or browse the full Williams AV collection at Creation Networks.
Key Features
- 21-User Tour Package — One DLT 400 transceiver and twenty DLR 400 ALK receivers cover a full tour group out of the box.
- Alkaline Battery Operation — Receivers run up to 30 hours on standard AAA alkaline batteries, eliminating charger logistics for field programs.
- Digital Spread-Spectrum RF — Frequency-hopping operation on the license-free 2.4 GHz ISM band avoids interference without FCC licensing.
- Fully Portable Deployment — No base station or rack-mount components are required, so setup takes minutes at any venue.
- Encrypted Transmission — Optional 87+128-bit encryption, a secure PIN code, and a settings lock protect confidential audio.
- Receiver Status Display — Each DLR 400 ALK includes an LCD showing battery level, RSSI, and group/channel number.
- Long Operating Range — Coverage extends up to 900 ft (274 m) depending on environmental conditions.
- Interpretation and Intercom Modes — The platform supports up to six simultaneous talkers and one floor language plus 14 translated languages.
- Hard Transport Case Included — The CCS 056 26 copolymer case organizes and protects the complete system between deployments.
Typical Applications
- Training room
- Government space
- House of worship
- Auditorium
- Multi-purpose room
- Commercial meeting space
Technical Specifications
DLT 400 Transceiver
| 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 |
| Battery | Lithium polymer, 1800 mAh, smart charge built in |
| Battery Life | Up to 16 hrs talk time per charge @ 1ch Tx and 1ch Rx |
| 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) |
| THD | 0.1% (default volume, 1 kHz) |
| Microphone Input | Internal mic and 3.5 mm jack with electret mic bias, 63 dB adjustable gain range |
| Line Input | USB-C, adjustable level |
| Range | Up to 900 ft (274 m), environment dependent |
| RF Output | 19 dBm typical |
| Security | 87-bit encryption (300 Series compatible), 87+128-bit encryption, encryption PIN, settings lock |
| Display | OLED |
| Approvals | FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty | 2 years (6 months on internal battery) |
DLR 400 ALK Receiver
| 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) |
| Battery Type | 2 x AAA alkaline |
| Battery Life | Up to 30 hrs (BAT 010-2 alkaline) |
| Audio Frequency Response (-3 dB) | Intercom mode: 100–7,300 Hz; interpretation and other modes: 100–11,200 Hz |
| SNR | 74 dB (A-weighted) |
| THD | 0.1% (typical) |
| Headphone Output | 3.5 mm TRRS jack, mono output; 27 mW max @ 32 ohms |
| Range | Up to 900 ft (274 m), environment dependent |
| Display | LCD: battery level, RSSI, group/channel number |
| Compatible Units | DLT 400, DLT 300 |
| Operating Temperature | 14° to 113°F (-10° to 45°C) |
| Approvals | FCC, Industry Canada, RoHS 3, CE, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty | 2 years |
EAR 022 Earphone
| Style | Around-ear speaker |
| Plug | 3.5 mm mono |
| Cord | 39" |
| Driver Size | 23 mm |
| Nominal Impedance | 32 ohms |
| Frequency Response | 20 Hz – 20 kHz |
| Sensitivity | 118 dB @ 1 kHz |
CCS 056 26 Carry Case
| Interior Dimensions | 13.0" W x 18.0" L x 6.7" H (33 cm x 46 cm x 17 cm) |
| Exterior Dimensions | 15.7" W x 19.7" L x 7.2" H (40 cm x 50 cm x 18 cm) |
| Weight (empty) | 6.6 lbs (3 kg) |
| Material | Copolymer |
| Temperature Rating | -40°F to 160°F (-40°C to 71.1°C) |
Frequently Asked Questions
Why choose the ALK version over the rechargeable RCH version?
The ALK receivers run on standard AAA alkaline batteries with up to 30 hours of life, so there is no charging station to power, transport, or schedule around. It suits outdoor programs, rental fleets, and venues without convenient power.
Does this system require an FCC license?
No. The Digi-Wave 400 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 listeners later?
Yes. The platform supports an unlimited number of listen-only receivers; add DLR 400 ALK or DLR 400 RCH units as your group sizes grow.
Will it interfere with our facility Wi-Fi?
The system uses frequency-hopping spread spectrum across 2402–2476 MHz, an approach designed to coexist with Wi-Fi and other 2.4 GHz devices while avoiding interference to the tour audio.
Can the system handle language interpretation?
Yes. In interpretation mode it supports one floor language plus up to 14 translated languages, making it usable for multilingual tours, courtrooms, and conferences.
Is the audio secure?
Optional 87+128-bit encryption, an encryption PIN, and a settings lock are available for tours of sensitive facilities and confidential briefings.
What warranty applies?
Williams AV provides a 2-year warranty against component failure and manufacturing defects on the transceiver and receivers.
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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