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Group of people observing a presentation at a Pro A/V tradeshow.
Project: Invidis Consulting GMBH
Product: ListenRF
Location: Munich

invidis consulting GmbH, headquartered in Munich, Germany, is a renowned European consulting firm for digital signage. One of the strategic objectives of this specialized consultancy is to strengthen its own position as the leading information provider for digital signage in Europe. As a way to achieve this, the company provided a tour of signage at the Integrated Systems Europe (ISE) tradeshow.

Trade shows typically have loud background noise, and ISE was no exception. Therefore, guiding a tour on the show floor and ensuring everyone could hear the speaker was a challenge. The invidis consulting firm chose the Listen LT-700 Portable Display RF Transmitter to wirelessly broadcast audio to everyone in the group without having to carry a microphone or be plugged into a wall. The LT-700 is excellent for factory tours, outdoor events, wireless microphone applications, classrooms, training, or personal use – anywhere there is a need to amplify sound, but without an installed system.

System Component

• LT – 700 Portable Display RF Transmitter
• LA – 278 Behind the Head Microphone
• LR – 500 Portable Programmable Display RF Receiver
• LA – 164 Ear Speaker
• LA – 311 16-Unit Portable RF Product Charging/Carrying Case
• LA – 362 Rechargeable AA NiMH Batteries


The invidis consulting GmbH is a renowned European consulting and communications company for digital signage and DOOH (Digital Out-of-Home). The firm’s business model is based on four pillars; consulting, research, communications and events. To provide clients with all the necessary market information, invidis continuously collects and analyzes comprehensive and accurate industry data for the entire digital signage value chain. The company was founded in 2006 by Florian Rotberg (Managing Director) and Oliver Schwede (Senior Analyst). invidis consulting is a founding member of OVAB Europe.

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