GT 400T

GT 400T is a portable lightweight transmitter. It is easy to set up and use and operates over a distance of 100 meters.
QUICK SPECS
RF Output Power
10mW / 1mW, subject to local rules.
Battery Life
8-10 Hours
Antenna
Built-in
Microphone Connector
3.5mm

Engineered for Perfect Speech Capture

GT 400T is a portable lightweight transmitter. It is easy to set up and use and operates over a distance of 100 meters. When fully charged the transmitter can be used for 8-10 hours. The GT 400T is suitable for in and outdoor guided tours, and can also be used in meetings where one or more interpreters provide real time translation.

  • Portable, wireless listening, easy to set up and use. No installation is required.
  • Operating distance 100 meters (open field).
  • 32 switchable frequencies in Channel 70 (863-870MHz).
  • LCD channel display to show the selected channel by up and down button, frequency, battery condition and error code.
  • Allows an unlimited number of additional receivers to be used with one transmitter.
  • Pocket size, rechargeable wireless transmitter.
  • Fully charged batteries provide 8-10 hours use.
  • CL 2 Microphone included.
  • Internal Microphone.
  • GT- 400T transmitter incorporates MIC. Input (for connection of CL 2) and Aux. input allowing audio sources from CD or MP3 player.

For ‘Glossary of Terms’ Click Here

Portable, wireless listening, easy to set up and use. No installation is required.

Operating distance 100 meters (open field).

32 switchable frequencies in Channel 70 (863-870MHz).

LCD channel display to show the selected channel by up and down button, frequency, battery condition and error code.

Technical Specifications

RF Output Power
10mW / 1mW, subject to local rules.
Battery Life
8-10 Hours
Antenna
Built-in
Microphone Connector
3.5mm
Modulation Level
20kHz
Spurious Emission
<250nW
Carrier Frequency Range
863-870MHz

Key Features

01

Portable, wireless listening, easy to set up and use. No installation is required.

02

Operating distance 100 meters (open field).

03

32 switchable frequencies in Channel 70 (863-870MHz).

04

LCD channel display to show the selected channel by up and down button, frequency, battery condition and error code.

05

Allows an unlimited number of additional receivers to be used with one transmitter.

Downloads & Documentation

Installation Guide
PDF • 777.8 KB

Frequently asked questions

What industries does Clockaudio serve?
Clockaudio solutions are used across corporate offices, education, government, healthcare, broadcast, and commercial AV environments where reliable, high-quality audio is essential.

Yes — Clockaudio microphones and audio systems integrate seamlessly with major unified communications platforms including Microsoft Teams Rooms, Zoom Rooms, Cisco Webex, and Google Meet. Our boundary, gooseneck, and ceiling microphones deliver the clarity and reliability required for professional video conferencing installations worldwide.

Yes. Our engineering team provides system design consultations for integrators and end-users, helping specify the right combination of microphones, processors, and accessories for your space. Our technical support team is available throughout the installation and commissioning process.

Clockaudio has been designing and manufacturing professional audio products in the United Kingdom for over 40 years. Our UK facility handles R&D, precision assembly, and quality control — ensuring every product meets the standards expected by AV professionals worldwide.

The right microphone depends on your room size, acoustic environment, and application. Boundary microphones suit tabletop conferencing; goosenecks are ideal for fixed lectern or dais positions; ceiling-mounted mics offer clean aesthetics for modern meeting rooms. Contact our team or use our Search Facility to find a certified integrator near you for a tailored recommendation.

IDEAL FOR

Application Areas

Houses of Worship

Exceptional speech intelligibility for worship services and ceremonies.

Corporate AV

Professional audio solutions for corporate environments and facilities.

Healthcare Facilities

Clear communication for medical consultations and patient interactions.
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