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Full Duplex intercom
Seamless hands-free team communication in real time – no push-to-talk required
Full-duplex intercom systems enable especially natural team communication because all participants can speak and listen at the same time. Unlike traditional radios with push-to-talk, they create a conversational flow more like a phone call. That is why intercom system solutions with full-duplex audio are widely used in events, productions, industrial operations and outdoor teams, where fast coordination is essential. Modern intercom systems with MESH technology or Bluetooth provide stable connections and support group communication over longer distances.
Sena Nautitalk Bosun Mesh Quad Pack
IN STOCKPack of 4 Headsets with Mesh Intercom 3.0: clear, secure, hands-free group communication
- Pack of 4 headsets with multichannel communication and Bluetooth 5.2
- IPX7: waterproof and submersible, suitable for maritime use
- Group communication with Mesh Intercom™ 3.0 technology
- Instant connection at the push of a button
- Compatible with other Sena Mesh devices
- Floating buoy included for easy location in water
- Up to 100 m range for Mesh contact requests
- Advanced Noise Control (ambient noise reduction)
£832.99 £999.59 Incl. VATRef: SENANAUTIBOS4Compare
Sena CAST-02
Call us for availabilityNoise-cancelling headset designed for demanding industrial environments, featuring wireless Mesh communication and extreme hearing protection.
- Mesh 2.0 Technology: hands-free communication up to 4.4 km
- Port type: helmet mounts
- Passive noise reduction up to 30 dB (SNR)
- Ambient mode: hear without removing the headset
- Bluetooth 5.2 for calls, music, and smartphone pairing
- 12-hour talk time with fast charging
- Compatible with AAA batteries (optional)
- Resistance to extreme temperatures: -20°C to +60°C
£511.99 £614.39 Incl. VATRef: SENACAST02Compare
Sena Nautitalk Bosun Mesh
Call us for availabilityHeadphones with Mesh Intercom 3.0: clear, secure, hands-free group communication- Headset with multichannel communication and Bluetooth 5.2
- IPX7: waterproof and submersible, suitable for maritime use
- Group communication with Mesh Intercom™ 3.0 technology
- Instant connection with the push of a button
- Compatible with other Sena Mesh devices
- Floating buoy included for easy location in water
- Up to 100 m range for Mesh contact requests
- Advanced Noise Control (ambient noise reduction)
£216.99 £260.39 Incl. VATRef: SENANAUTIBOS1Compare
Sena CAST-01
Call us for availabilityNoise-cancelling headset designed for demanding industrial environments, featuring wireless Mesh communication and advanced hearing protection.- Mesh 2.0 Technology: hands-free communication up to 4.4 km
- Port type: headband
- Passive noise reduction up to 34 dB (SNR)
- Ambient mode: hear without removing the headset
- Bluetooth 5.2 for calls, music, and smartphone pairing
- 12-hour talk time with fast charging
- Compatible with AAA batteries (optional)
- Resistant to extreme temperatures: -20°C to +60°C
£511.99 £614.39 Incl. VATRef: SENACAST01Compare
Sena Nautitalk Bosun Mesh Twin Pack
Call us for availabilityPack of 2 Headsets with Mesh Intercom 3.0: clear, secure, hands-free group communication
- Pack of 2 headsets with multichannel communication and Bluetooth 5.2
- IPX7: waterproof and submersible, suitable for maritime use
- Group communication with Mesh Intercom™ 3.0 technology
- Instant connection at the push of a button
- Compatible with other Sena Mesh devices
- Floating buoy included for easy location in water
- Up to 100 m range for Mesh contact requests
- Advanced Noise Control (ambient noise reduction)
£420.99 £505.19 Incl. VATRef: SENANAUTIBOS2Compare
Key features and core functions
A full-duplex intercom works fundamentally differently from a traditional radio. Instead of speaking one after another, all participants can communicate simultaneously. In daily use, the system feels far more natural because conversations flow more smoothly and information is exchanged faster. In situations where teams need to remain permanently connected, such as live productions, technical operations, or dynamic working environments, open communication offers clear advantages.
Modern full-duplex intercom system solutions use digital signal processing and connection technologies such as MESH networks or Bluetooth to link multiple users reliably. At the same time, features such as noise and echo cancellation ensure that conversations remain clear, even in loud or windy environments.
| Full-duplex audio | Simultaneous speaking and listening without a push-to-talk button. |
| Permanent open audio link | Team members remain continuously connected. |
| Digital audio processing with echo cancellation | Clear voice quality even when several people speak at once. |
| MESH or Bluetooth technology | Flexible network structure for dynamic teams. |
| Group communication | Multiple users can speak with each other at the same time. |
| Automatic participant synchronisation | Devices connect automatically to existing networks. |
| Long battery life | Typically 8–15+ hours for events, productions or outdoor operations. |
| Wind and noise suppression | Improves voice quality in outdoor or industrial environments. |
| Helmet or headset integration | Suitable for productions, motorsports, or industrial applications. |
| Range optimisation through MESH | Teams can be expanded flexibly and connected over greater distances. |
How do you choose the right product?
- OK Define team size: plan how many people need to communicate at the same time.
- OK Consider range: Bluetooth suits short distances, while MESH is better for larger teams.
- OK Check battery life: systems should easily cover a full working day.
- OK Consider headset or helmet integration: accessories must match the working environment.
- OK Analyse the working environment: wind, machine noise or outdoor conditions require strong noise suppression.
Use cases in professional environments
Full-duplex intercom systems are especially useful where teams need to remain permanently connected. In events and live production, technicians, stage managers, and production teams coordinate in real time. Film and TV productions use an intercom system for direct communication among directors, camera crews and technical staff. In industrial and maintenance operations, an open communication link can also speed up workflows. Outdoor teams, motorsport crews and motorcycle groups also benefit from intercom solutions with MESH technology, as they enable stable group communication without the discipline required by traditional radio.
Why choose Onedirect as your partner?
OneDirect helps businesses choose the right full-duplex intercom solution based on team size, the working environment, and accessory requirements. With fast delivery, permanent stock availability, and expert advice, we can efficiently implement communication solutions. Official accessories, technical support and a dedicated aftersales service are also available.
FAQ – Frequently asked questions
What does full-duplex mean in an intercom system?
Full-duplex means that all participants can speak and listen at the same time, similar to a phone call.
What are intercom systems used for?
They are commonly used for events, film productions, stage productions, motorsports, and technical teamwork.
How many people can speak at the same time?
That depends on the system. Many modern solutions support group communication with several users speaking simultaneously.
Which technology do modern intercom systems use?
Many systems use Bluetooth or MESH technology to create stable connections between multiple participants.
What is the difference between an intercom and a traditional radio?
An intercom system provides an open audio connection without push-to-talk, while traditional radios only allow one person to speak at a time.