Adastra TGM4 talk-through-glass system

£68.40 £82.08 incl. VAT

Two-way speech enhancing communication system

Available to pre-order



Adastra TGM4 two-way talk-through-glass system

COVID-19: As we start to get back to a normal life, some social distancing is still required and many businesses will need to serve their customers in a safe and efficient way – a cafe, bar or pub may have outside seating and need to annouce that the next order is ready, a pharmacy queue outside may need to know that a particular prescription is ready for collection or a ‘click and collect’ operation may wish to call the next customer forward and talk-through-glass systems have become more necessary with protective screens becoming a must have in many environments. Wireless communication in education, podcasting and distance calling in many situations demands these specialist products

Intercom for conversation through a glass partition comprising a desktop speaker unit with gooseneck microphone and an extension speakerphone unit, which can be positioned horizontally or vertically in the client area. Independent level controls for the main unit and client speakerphone provide tailored adjustment to overcome the ambient noise level, with muting and anti-feedback circuitry to make two-way conversation clear and intelligible. an additional output is provided for recording both sides of the conversation. Applications include ticket booths, bank counters, petrol stations and receptions.

  • Desktop main speaker unit with gooseneck microphone
  • Glass or counter mount client speakerphone
  • Hands-free operation
  • Volume control and signal indicator for each microphone
  • 1.6m connection lead
  • Power supply: 9Vdc 300mA pin negative (adaptor supplied)
  • Controls: 2 x volume control & power on/off
  • Connectors: 3.5mm TRS speakerphone, 3.5mm stereo record out
  • Lead length: 1.6m (hard-wired to speakerphone)
  • Dimensions:
    Main unit: 158 x 87 x 46mm
    Microphone: 285 x 113mmØ (fixed to main unit)
    Client speakerphone: 91 x 77 x 23mm
  • Weight:
    Main unit (inc. microphone): 347g
    Client speakerphone (inc. lead): 87g



Founded in 1949, Adastra has earned a reputation for delivering high quality public address systems. Adastra strives to provide complete and versatile solutions for commercial 100v line PA sound installations, with specialist products provided for zoning, noise pollution control, portable public address and induction loop systems. A comprehensive range of associated products are also available, including speaker brackets, rack cabinets, cables and microphones. These products have been created with the user in mind, offering a flexible and modular approach to installation sound systems. For over 60 years Adastra has serviced the needs of the public address sector as a fully established brand name, celebrated for quality and excellence, and will continue to develop and diversify its range in order to remain at the forefront of the industry.

Additional information

Weight0.434 kg

3.5mm Jack




Black, Silver

User Manuals


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