Williams Sound DIGI-WAVE 400 Kit for One Way Communication

(No reviews yet) Write a Review
Calculated at Checkout

The DIGI-WAVE 400 kit makes it easier to hear in everyday situations by reducing background noise and compensating for poor room acoustics or distance from the sound source. This package is designed for one-way communication where one person speaks and one person listens.

The Digi-Wave 400 system is beneficial for an array of personal listening scenarios—from conversations around the coffee table to hearing every word of your favorite TV program. Enjoy hearing assistance via boosted audio by simply placing the DLT400 transceiver near the sound source and the DLR400 receiver near you for improved comprehension.

The DW400 series is the next generation Digi-Wave of digital intercom and tour guide communication systems.  A new, intuitive user interface, charging dock and pairing option have been added. 

Purchase additional DLT transceivers for this system for multiple speakers and additional DLR receivers to accommodate multiple listeners.

DLT400 Features:

The DLT400 Transceiver features full-duplex capability, supporting up to four simultaneous talkers in two-way mode, and up to six simultaneous talkers in intercom mode. Slim, lightweight, and simple to set up and use. One or two-way operation offers flexibility in an array of applications.  With the push of a button, users can access two-way communication for immediate interaction or Q&A.

  • Typical range up to 325 feet
  • 14 hrs talk time per charge / 5 hrs. approx. charging time
  • Lithium Polymer battery with smart charge built into transceiver
  • Easier-to-read, more intuitive OLED display screen
  • 73 dB signal-to-noise ratio
  • Volume and tone control
  • Use with earphones, headphones or neckloop (see Accessories)
  • 3.5 mm TRRS stereo/mono headphone jack
  • Auto Sleep Mode after 5 minutes
  • Up to 4 simultaneous talkers in two-way mode
  • Up to 15 simultaneous channels (Interpretation mode)
  • Up to 4 simultaneous groups (2-way mode)
  • Up to 4 simultaneous talkers per group (2-way mode)
  • Up to 6 simultaneous talkers per group (2-way Intercom mode)
  • 2.4 GHz (ISM band);  2402 – 2476 MHz FHSS frequencies
  • Secure encryption; 87 bit (300 series compatible), 87+128 bit for 400 series
  • 4-PIN group security code, Security lock on program set-up.
  • Approved by FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC and Giteki
  • Dimensions: 4.22"W x 2.60"H x 0.50"D
  • Warranty: 2 years parts and labor (90 days on accessories); 6 months on internal battery

DLR400 Features:

The DLR400 receiver is for listen-only applications. Simple to set up and use.  Features automatic mode selection and shut-off. Large OLED screen displays channel, volume, battery level and RF signal strength. Receives up to two presenters simultaneously during team presentations.  Can be used with earphones, headphones, neckloop (see Accessories) or built-in speaker.  Add any quantity for larger groups. 

  • Large OLED display – easy to read status and manage settings
  • Quick Group Change – change groups without the need to access a menu
  • Sleek, lightweight design - easy to carry and use
  • Typical range up to 325 feet
  • 2.4 GHz (ISM band) Frequency
  • Up to 15 simultaneous channels (one way mode)
  • 74 dB signal-to-noise ratio
  • Volume control
  • Auto Sleep Mode after 5 minutes
  • 3.5 mm TRRS jack with mono output
  • Use with earphones, headphones or neckloop (see Accessories)
  • Uses 2 x AAA Alkaline Disposable Batteries for up to 30 hours use. 
  • Dimensions: 2.36" W x 3.54" H x 0.63" D
  • Approved by FCC, Industry Canada, RoHS 3, CE, WEEE, RCM, ANATEL, KC and Giteki


  • DLT400 transceiver
  • DLR400 receiver
  • MIC 190 lapel microphone
  • EAR 041 earphone
  • BAT 010-2 AAA alkaline batteries
  • DW ACC PAC4 power supply
  • CCS 043 system carry case