Adam Schezerwath
November 3, 2026
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Sonifex LD-40F1INT is a 40cm INTERVIEW IN PROGRESS LED studio sign from the SignalLED range, providing clear room status indication with bright RGB illumination and simple flush mounting.
$ 383.00
The Sonifex LD-40F1INT is a 40cm flush-mount RGB LED studio sign displaying the legend “INTERVIEW IN PROGRESS” to show clearly when a room is in use for recordings or sensitive meetings.
It is part of the SignalLED range, so the Sonifex LD-40F1INT uses high-efficiency LEDs and an edge-lit acrylic panel to give bright, even illumination with low power consumption and long life.
The slim aluminium housing lets the LD-40F1INT mount neatly over a standard electrical back box, providing a professional finish in corridors, reception areas and outside studios.
A regulated 5–7V DC input and simple screw-terminal connections make this LED studio sign quick to wire from GPIO, tally outputs or local switches, ideal for broadcast, podcast and corporate facilities needing reliable INTERVIEW IN PROGRESS signage.
