Eartec Ultralite UL4S HD – Wireless Intercom Set for 4 People
Full-duplex headset communication for film, stage and broadcast
Special price: € 898.00
incl. VAT
( instead of 969.85 )
754.62 € w/o vat
in stock
Shipping costarticle number: 12058 | manufacturer number: UL4S-HD | EAN/UPC: 0672225579380
The Eartec Ultralite UL4S HD is a wireless full-duplex intercom set for 4 people. It consists of a master headset and the matching remote headsets and is suitable for clear team communication in film, studio, live event, stage and broadcast.
This set is designed for camera, direction, stage and technology. The transmitter and receiver are integrated directly into the headsets, so no separate belt packs are required. The one-sided headsets keep one ear free and are particularly suitable if you still want to hear ambient noise.
- Wireless full-duplex communication without a talk button
- Direct communication with up to 5 Ultralite units
- DECT technology with registration and fee-free conditions 1.9 GHz frequency range
- Incrementally expandable within the Ultralite series
- 1 x ULSM HD
- 3 x ULSR HD
- 10-fold charger
- 4 batteries
- large Bag
- Up to 400 meters range, depending on the environment and operating conditions
- Microphone arm with 270 degrees Swivel range, can be worn left or right
- Automatic microphone mute when the microphone is folded up
- Replaceable lithium batteries for flexible usage times
- Up to 6 hours of operation with one Battery set
The UL4S HD set is suitable for teams that need to talk to each other reliably without hard wiring. Typical applications are mobile productions, director's workstations, camera teams and technical crews.
- Film, video and studio productions
- Live events, stage and event technology
- Broadcast, streaming and Camera communication
Real product can look different to picture
techn. Specs▲
Technical data
| Standard | DECT | DECT 6.0 (Digital Enhanced Cordless Telecommunications) |
|---|---|---|
| Frequency | USA | 1920 - 1930 MHz |
| Europe | 1880 - 1900 MHz | |
| Frequency range | Preferred frequency | TX/RX: 1921.536 - 1928.448 MHz |
| Tuning range Receive | 1921.536 – 1928.448 MHz | |
| Power | Max. Transmission power | 100 mW |
| Transmission | Usage type | TDMA |
| Channel tuning Step | 1,728 MHz | |
| Channel bandwidth | 1,728 MHz | |
| Modulation | GFSK | |
| Transmission speed | 1,152 Mbit/s (Baud Rate) | |
| Duplex / Access | Duplex | Time Division Duplex (TDD) |
| Access method | Time Division Multiple Access (TDMA) | |
| Audio | Speech coding | ADPCM / 32 kbit/s |
| Range | Max. Distance | approx. 300 meters(line of sight, depending on terrain) |
| Power supply | Headset battery | Rechargeable lithium 3.7V / 800mAh / 3.0 Wh |
| Charger | AC adapter: input 110 - 240 V AC | |
| Operation | Charging Time | approx. 3 hours |
| Operating time | approx. 5 – 6 hours | |
| Environment | Operating temperature | 0 °C to 40 °C |
| Storage | -10 °C to 50 °C | |
| General | Weight | approx. 113 g (individual devices) |
Questions & Answers▲
How many people can communicate with this set at the same time?
The set is designed for 4 people and contains 4 headsets. Up to 5 devices can communicate directly with each other.
What is the range of the wireless intercom system?
The range is more than 300 meters in full duplex mode and can reach up to 400 meters.
How long does the battery last on a headset?
The lithium batteries allow up to 6 hours of operating time with one battery pack. The batteries can be quickly replaced for virtually uninterrupted operation.
What is included?
The set contains 4 headsets (1 master, 3 remote), 4 batteries, a 10-fold charger, a transport bag and all necessary components for immediate operation.
Can the microphone be worn on both the left and right?
Yes, the microphone and microphone capsule can be worn on both the left and right and have a swivel angle of 270 degrees.
How does automatic mute work?
When the microphone is tilted vertically upwards, the microphone is automatically muted.
What frequency does the system use and does it require registration?
The system works in the registration- and fee-free 1.9 GHz frequency range with DECT technology and has European approval.
How are the batteries charged?
The batteries are charged directly in the included 10-fold charger. A red LED indicates the charging process, a green LED signals the completion of the charging process.
Can the system be expanded later?
Yes, the system can be started with a few devices and built up step by step. If you have more than 5 devices, an additional base station can be purchased.
What type of communication does the system support?
The system supports full duplex communication, allowing all participants to speak and hear simultaneously. DECT technology enables crystal-clear communication.
documents, files, links▲
product safety (GPSR)▲

eartec-ultralite-manual-english-2016.pdf