
When your event depends on clear multilingual communication, unreliable audio and complicated equipment are not an option. The Retekess TT117 TT118 Simultaneous Interpretation System gives interpreters and attendees a simple, dependable way to stay connected in real time. This portable setup includes a TT117 transmitter, TT118 receivers, a lavalier microphone, and headphones—making it easy to deliver live interpretation for meetings, church services, factory tours, training sessions, and international events. Need multiple language feeds in the same venue? The system supports flexible multi-channel expansion, so you can add another transmitter and microphone for each additional language or audio source.

Coordinating interpretation for multiple language groups can quickly become confusing—especially when attendees need to switch languages on the spot. The TT117 + TT118 system offers 17 selectable channels for flexible setup, supporting up to 6 language groups simultaneously within the same venue. This gives event organizers a cleaner way to manage multilingual audio without complicated wired infrastructure, helping listeners find the right channel quickly and stay focused on the event instead of the equipment.

Weak coverage leads to missed words and constant repetition. Using the reserved 72–76 MHz FM band, this system delivers clear, reliable audio at distances up to 262 ft (80 m) in open areas. Because FM signals can pass through walls and common obstacles, listeners can stay connected without needing a direct line of sight—ideal for conference rooms, worship spaces, tours, and multi-room events.
Not every guest is comfortable with technical equipment—and they should not have to be. With a clean 5-button layout and dedicated channel up/down controls, users can switch between available language channels in seconds. This helps reduce staff support time at check-in, shortens setup confusion, and makes the listening experience much more approachable for first-time attendees.
Traditional interpretation systems can create unnecessary limitations with cables, installation requirements, and fixed seating layouts. This fully wireless system removes those barriers, making it easier to support temporary events, rental use, traveling teams, and venues that need a fast turnaround. Whether attendees are seated, standing, or moving between spaces, the system is designed to keep interpretation accessible without locking your event into a rigid room setup.

Instead of waiting for devices to recharge, this system runs on 2 AA batteries for quick replacement when power runs low. The transmitter can operate for more than 8 hours, while the receiver lasts up to 10 hours. For all-day meetings, mobile events, and back-to-back sessions, that means less downtime, simpler prep, and an easier backup plan.

Heavy devices can become uncomfortable during long events. At just 3.2 oz (90 g) each, the transmitter and receiver are easy to wear on a lanyard or carry in a pocket throughout the day.

The built-in LCD screen clearly shows channel, battery status, and volume, so staff and users can check device status at a glance.

The AUX interface supports stereo audio input, and the included dual earphones are tuned to work well with TT118 receivers for clearer voice reproduction.

With 9 adjustable volume levels, attendees can set a comfortable listening level based on the room, headphones, and personal preference.

One-touch mute makes quick control easy when needed, while lock mode helps prevent unwanted setting changes during active sessions.

One transmitter can work with an unlimited number of receivers, giving you the flexibility to expand as needed.

The included over-ear headphones help reduce outside distractions and improve focus on the translated audio. Soft foam padding supports longer wear, while the adjustable headband fits a wide range of users. With a standard 3.5 mm stereo plug, they are ready to use right out of the box.

The included lavalier microphone clips easily to clothing for hands-free use, helping maintain a more natural speaking posture while capturing clear voice audio. Its compact design also makes it practical for interpreters who need to stay mobile during tours, stage events, or training sessions.
If you already use compatible FM assistive listening or interpretation gear, replacing your entire setup may not be necessary. This system is designed to work with many 72–76 MHz FM systems, including popular Williams Sound transmitters such as the PPA T35, T27, T32, and T36.

The included carrying case keeps the transmitter, receivers, microphone, and headphones organized in separate compartments, helping your team pack faster, travel cleaner, and reduce setup stress on site.
1. The main speaker uses a TT117 transmitter to send the floor language on one channel, such as English on Channel 01.
2. Interpreters use TT118 receivers tuned to that channel to monitor the original speech in real time.
3. Each interpreter then uses a separate TT117 transmitter to broadcast their translated language on a different channel, such as Spanish on Channel 02 or French on Channel 03.
4. Listeners simply wear TT118 receivers and select the channel for the language they need.
5. Channel assignments are flexible, so you can set different languages to different channels according to your event requirements.
| Features | TT117 TT118 | TT118 TT119 | T130T T131T |
|---|---|---|---|
| Type | Professional Interpretation | Professional Interpretation | Professional Interpretation |
| Interpreter Required | Yes | Yes | Yes |
| Monitor | No | Yes | Yes |
| TX Type | Handheld | Table-top | Table-top |
| RX Type | Handheld | Handheld | Handheld |
| Channels | 17 | 17 | 19CH / 50CH |
| Range | 80 m (262 ft) | 300 m (984 ft) | 250 m (820 ft) |
| Frequency | 72–76 MHz FM | 72–76 MHz FM | UHF |
| Multi-System Operation | No | No | T131U / T131R |
| Noise Reduction | Yes | Yes | Yes |
| Two-way Talk | No | No | No |
| Battery Life (TX / RX) | 8 h / 10 h | Unlimited / 10 h | Unlimited / 40 h |
| Battery Type | Replaceable AA battery | Corded Electric | Corded Electric |
| Best Use Cases | Budget-conscious / Small-to-medium meetings, churches, schools, and community events | Fixed-venue meetings / Large conferences, churches, courtrooms, seminars | Fixed-venue meetings / Large conferences, churches, courtrooms, seminars |
| Features | T130P | TT116 | TT106S |
|---|---|---|---|
| Interpreter Required | Yes | Yes | Yes |
| Language Support / Interpreters | Accommodates up to 7 interpreters | Accommodates up to 4–8 interpreters | Accommodates up to 3 interpreters |
| Monitor | No | No | No |
| TX Type | Handheld | Handheld | Handheld |
| RX Type | Handheld | Handheld | Earhook |
| Channels | 49 | 50 | — |
| Range | 160 m (525 ft) | 200 m (656 ft) | 200 m (656 ft) |
| Frequency | 195–216 MHz | UHF | 2.4–2.485 GHz |
| Multi-System Operation | No | No | No |
| Noise Reduction | Yes | Yes | Yes |
| Two-way Talk | No | No | No |
| Battery Life (TX / RX) | 20 h / 36 h | 10 h / 13 h | 23 h / 50 h |
| Battery Type | Type-C and contact charging | Replaceable BL-5C battery | Type-C |
| Best Use Cases | Fully mobile / Multi-site events, churches, schools, and community events | Replaceable batteries for extended use / Churches, schools, and community events | Extremely lightweight receiver needed / Churches, schools, and community events |
| Features | TT136 |
|---|---|
| Interpreter Required | No |
| Language Support / Interpreters | 120+ languages |
| Monitor | No |
| TX Type | Handheld |
| RX Type | Earhook |
| Channels | 120+ |
| Range | 200 m (656 ft) |
| Frequency | FHSS 2.4G |
| Multi-System Operation | No |
| Noise Reduction | Yes |
| Two-way Talk | Yes |
| Battery Life (TX / RX) | 20 h / 13 h |
| Battery Type | Type-C |
| Best Use Cases | No interpreter + International factory tours, multilingual tours, schools, business receptions |
| KIT 1 | 3 Transmitters + 30 Receivers + 1 Carrying Case + 30 Headphones |
| Transmitter*3, Receiver*30, Lavalier Microphone*3, Single-ear Headphone*30, Over-ear Headphones*30, Lanyard*33, 50-Slot Carry Bag*1, User Manual*1 |
Trusted by customers worldwide.
Built on long-term industry experience.
Chosen by users who value reliable performance.
A proven choice across multiple product lines.
Need a simultaneous interpretation solution for your venue or event? We offer solutions for different scenarios and audience sizes.
Get Your Custom Solution

When your event depends on clear multilingual communication, unreliable audio and complicated equipment are not an option. The Retekess TT117 TT118 Simultaneous Interpretation System gives interpreters and attendees a simple, dependable way to stay connected in real time. This portable setup includes a TT117 transmitter, TT118 receivers, a lavalier microphone, and headphones—making it easy to deliver live interpretation for meetings, church services, factory tours, training sessions, and international events. Need multiple language feeds in the same venue? The system supports flexible multi-channel expansion, so you can add another transmitter and microphone for each additional language or audio source.

Coordinating interpretation for multiple language groups can quickly become confusing—especially when attendees need to switch languages on the spot. The TT117 + TT118 system offers 17 selectable channels for flexible setup, supporting up to 6 language groups simultaneously within the same venue. This gives event organizers a cleaner way to manage multilingual audio without complicated wired infrastructure, helping listeners find the right channel quickly and stay focused on the event instead of the equipment.

Weak coverage leads to missed words and constant repetition. Using the reserved 72–76 MHz FM band, this system delivers clear, reliable audio at distances up to 262 ft (80 m) in open areas. Because FM signals can pass through walls and common obstacles, listeners can stay connected without needing a direct line of sight—ideal for conference rooms, worship spaces, tours, and multi-room events.
Not every guest is comfortable with technical equipment—and they should not have to be. With a clean 5-button layout and dedicated channel up/down controls, users can switch between available language channels in seconds. This helps reduce staff support time at check-in, shortens setup confusion, and makes the listening experience much more approachable for first-time attendees.
Traditional interpretation systems can create unnecessary limitations with cables, installation requirements, and fixed seating layouts. This fully wireless system removes those barriers, making it easier to support temporary events, rental use, traveling teams, and venues that need a fast turnaround. Whether attendees are seated, standing, or moving between spaces, the system is designed to keep interpretation accessible without locking your event into a rigid room setup.

Instead of waiting for devices to recharge, this system runs on 2 AA batteries for quick replacement when power runs low. The transmitter can operate for more than 8 hours, while the receiver lasts up to 10 hours. For all-day meetings, mobile events, and back-to-back sessions, that means less downtime, simpler prep, and an easier backup plan.

Heavy devices can become uncomfortable during long events. At just 3.2 oz (90 g) each, the transmitter and receiver are easy to wear on a lanyard or carry in a pocket throughout the day.

The built-in LCD screen clearly shows channel, battery status, and volume, so staff and users can check device status at a glance.

The AUX interface supports stereo audio input, and the included dual earphones are tuned to work well with TT118 receivers for clearer voice reproduction.

With 9 adjustable volume levels, attendees can set a comfortable listening level based on the room, headphones, and personal preference.

One-touch mute makes quick control easy when needed, while lock mode helps prevent unwanted setting changes during active sessions.

One transmitter can work with an unlimited number of receivers, giving you the flexibility to expand as needed.

The included over-ear headphones help reduce outside distractions and improve focus on the translated audio. Soft foam padding supports longer wear, while the adjustable headband fits a wide range of users. With a standard 3.5 mm stereo plug, they are ready to use right out of the box.

The included lavalier microphone clips easily to clothing for hands-free use, helping maintain a more natural speaking posture while capturing clear voice audio. Its compact design also makes it practical for interpreters who need to stay mobile during tours, stage events, or training sessions.
If you already use compatible FM assistive listening or interpretation gear, replacing your entire setup may not be necessary. This system is designed to work with many 72–76 MHz FM systems, including popular Williams Sound transmitters such as the PPA T35, T27, T32, and T36.

The included carrying case keeps the transmitter, receivers, microphone, and headphones organized in separate compartments, helping your team pack faster, travel cleaner, and reduce setup stress on site.
1. The main speaker uses a TT117 transmitter to send the floor language on one channel, such as English on Channel 01.
2. Interpreters use TT118 receivers tuned to that channel to monitor the original speech in real time.
3. Each interpreter then uses a separate TT117 transmitter to broadcast their translated language on a different channel, such as Spanish on Channel 02 or French on Channel 03.
4. Listeners simply wear TT118 receivers and select the channel for the language they need.
5. Channel assignments are flexible, so you can set different languages to different channels according to your event requirements.
| Features | TT117 TT118 | TT118 TT119 | T130T T131T |
|---|---|---|---|
| Type | Professional Interpretation | Professional Interpretation | Professional Interpretation |
| Interpreter Required | Yes | Yes | Yes |
| Monitor | No | Yes | Yes |
| TX Type | Handheld | Table-top | Table-top |
| RX Type | Handheld | Handheld | Handheld |
| Channels | 17 | 17 | 19CH / 50CH |
| Range | 80 m (262 ft) | 300 m (984 ft) | 250 m (820 ft) |
| Frequency | 72–76 MHz FM | 72–76 MHz FM | UHF |
| Multi-System Operation | No | No | T131U / T131R |
| Noise Reduction | Yes | Yes | Yes |
| Two-way Talk | No | No | No |
| Battery Life (TX / RX) | 8 h / 10 h | Unlimited / 10 h | Unlimited / 40 h |
| Battery Type | Replaceable AA battery | Corded Electric | Corded Electric |
| Best Use Cases | Budget-conscious / Small-to-medium meetings, churches, schools, and community events | Fixed-venue meetings / Large conferences, churches, courtrooms, seminars | Fixed-venue meetings / Large conferences, churches, courtrooms, seminars |
| Features | T130P | TT116 | TT106S |
|---|---|---|---|
| Interpreter Required | Yes | Yes | Yes |
| Language Support / Interpreters | Accommodates up to 7 interpreters | Accommodates up to 4–8 interpreters | Accommodates up to 3 interpreters |
| Monitor | No | No | No |
| TX Type | Handheld | Handheld | Handheld |
| RX Type | Handheld | Handheld | Earhook |
| Channels | 49 | 50 | — |
| Range | 160 m (525 ft) | 200 m (656 ft) | 200 m (656 ft) |
| Frequency | 195–216 MHz | UHF | 2.4–2.485 GHz |
| Multi-System Operation | No | No | No |
| Noise Reduction | Yes | Yes | Yes |
| Two-way Talk | No | No | No |
| Battery Life (TX / RX) | 20 h / 36 h | 10 h / 13 h | 23 h / 50 h |
| Battery Type | Type-C and contact charging | Replaceable BL-5C battery | Type-C |
| Best Use Cases | Fully mobile / Multi-site events, churches, schools, and community events | Replaceable batteries for extended use / Churches, schools, and community events | Extremely lightweight receiver needed / Churches, schools, and community events |
| Features | TT136 |
|---|---|
| Interpreter Required | No |
| Language Support / Interpreters | 120+ languages |
| Monitor | No |
| TX Type | Handheld |
| RX Type | Earhook |
| Channels | 120+ |
| Range | 200 m (656 ft) |
| Frequency | FHSS 2.4G |
| Multi-System Operation | No |
| Noise Reduction | Yes |
| Two-way Talk | Yes |
| Battery Life (TX / RX) | 20 h / 13 h |
| Battery Type | Type-C |
| Best Use Cases | No interpreter + International factory tours, multilingual tours, schools, business receptions |
| KIT 1 | 3 Transmitters + 30 Receivers + 1 Carrying Case + 30 Headphones |
| Transmitter*3, Receiver*30, Lavalier Microphone*3, Single-ear Headphone*30, Over-ear Headphones*30, Lanyard*33, 50-Slot Carry Bag*1, User Manual*1 |
Trusted by customers worldwide.
Built on long-term industry experience.
Chosen by users who value reliable performance.
A proven choice across multiple product lines.
Need a simultaneous interpretation solution for your venue or event? We offer solutions for different scenarios and audience sizes.
Get Your Custom Solution
| TT117 TRANSMITTER | TT118 RECEIVER | |
|---|---|---|
| Frequency range | 72-76MHz | 72-76MHz |
| Channel | 17 channels | 17 channels |
| Power supply | 2 AA batteries | 2 AA batteries |
| Working hours | 8 hours | 10 hours |
| Working voltage | 3V | 3V |
| Working range | 80 meters (262.47 ft) | 80 meters (262.47 ft) |
| Size | 53×93.5×20mm (2.09 × 3.68 × 0.79 in) | 53×93.5×20mm (2.09 × 3.68 × 0.79 in) |
| Weight | 90g | 90g |
| TT117 TRANSMITTER | |
|---|---|
| Frequency range | 72-76MHz |
| Channel | 17 channels |
| Power supply | 2 AA batteries |
| Working hours | 8 hours |
| Working voltage | 3V |
| Working range | 80 meters (262.47 ft) |
| Size | 53×93.5×20mm (2.09 × 3.68 × 0.79 in) |
| Weight | 90g |
| TT118 RECEIVER | |
|---|---|
| Frequency range | 72-76MHz |
| Channel | 17 channels |
| Power supply | 2 AA batteries |
| Working hours | 10 hours |
| Working voltage | 3V |
| Working range | 80 meters (262.47 ft) |
| Size | 53×93.5×20mm (2.09 × 3.68 × 0.79 in) |
| Weight | 90g |
| TT017 50 SLOT CARRY CASE | ||
|---|---|---|
| Model | TT017 50 Slot Carry Case | |
| Material | Nylon cloth wrapped with EVA | |
| Size | 370×340×110mm / 14.56 × 13.38 × 4.33 inch | |
| Weight | 1890g | |
Q: What is the Retekess TT117 TT118 used for?
A: The Retekess TT117 TT118 is a portable simultaneous interpretation system built for real-time multilingual communication. It helps speakers, interpreters, and audiences stay clearly connected during conferences, church services, factory tours, training sessions, seminars, and other events that need wireless language support.
Q: Is this system a good fit for multilingual events, and how many channels and languages does it support?
A: Yes. TT117 TT118 is designed for multilingual events and mixed-language audiences. It offers 17 selectable channels and supports up to 6 language groups at the same time, giving you a flexible way to manage multiple language feeds within the same venue.
Q: How does the Retekess interpretation equipment work?
A: The picture below can help you understand how it works.
Q: Does it need Wi-Fi, Bluetooth, or an app, and is it fully wireless?
A: No. TT117 TT118 uses FM transmission, so it does not rely on Wi-Fi, Bluetooth, internet access, or a mobile app. Yes, it is fully wireless, which means faster setup, less cable clutter, and more flexibility for seating, movement, and temporary event spaces.
Q: How many receivers can work with one transmitter, and can the system be expanded?
A: One TT117 transmitter can work with an unlimited number of TT118 receivers on the same channel. The system is also easy to expand—just add more receivers for larger groups or more transmitters for additional languages and audio channels.
Q: What is the operating range?
A: TT117 TT118 offers a range of up to 262 ft (80 m) in open areas. Because it uses the 72–76 MHz FM band, it can also provide stable audio through typical indoor obstacles like walls and partitions, making it a practical choice for conference rooms, worship spaces, and guided tours.
Q: How long does the battery last?
A: The transmitter runs for more than 8 hours, and the receiver lasts up to 10 hours, depending on actual use. Both units use standard AA batteries, so swapping power during all-day events or back-to-back sessions is quick and easy.
Q: Are headphones and a microphone included?
A: Yes. The system includes headphones and a lavalier microphone, so you can get started right away. The headphones use a standard 3.5 mm stereo plug, and the lavalier mic gives speakers and interpreters a hands-free, more natural way to speak during live events.
Q: Do you offer technical support or assistance after purchase?
A: Absolutely! Our dedicated technical support team is available to help you with any queries or problems you may have with your Retekess interpreting device. Please feel free to email [email protected] and we'll be happy to help!