Description

Retekess TT117 TT118 portable simultaneous interpretation system

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.

17 channels

Built for Multilingual Events That Need Flexible Channel Management

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.

Long work range

Stable Audio Across Your Venue

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.

Simple Channel Switching for Guests, Visitors, and First-Time Users

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.

Wireless Setup That Keeps Seating and Movement Flexible

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.

Powered by 2 AA batteries

Replaceable AA Batteries Keep You Running Without Downtime

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.

Key Features at a Glance

  • Compact and lightweight interpretation system

    Lightweight Enough for All-Day Use

    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.

  • Easy-to-read LCD display

    Clear LCD Display for Faster On-Site Management

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

  • Stereo audio input

    Better Listening Quality for Spoken Translation

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

  • 9 adjustable volume levels

    9 Volume Levels for Different Hearing Needs

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

  • One-touch mute and lock

    Mute and Lock Functions Help Avoid Disruptions

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

  • Expandable receiver system

    Easy to Scale for Small Meetings or Large Groups

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

Noise-isolating over-ear headphones

Comfortable Headphones That Help Listeners Stay Focused

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.

Hands-free lavalier microphone

Hands-Free Lavalier Microphone for Clear, Professional Delivery

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.

Works with Existing 72–76 MHz FM Equipment

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.

Portable storage and transport case

Organized Storage for Faster Setup and Easier Transport

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.

How Multilingual Interpretation Works?

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.

Compare Interpretation Solutions

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
  • TypeProfessional Interpretation
  • Interpreter RequiredYes
  • MonitorNo
  • TX TypeHandheld
  • RX TypeHandheld
  • Channels17
  • Range80 m (262 ft)
  • Frequency72–76 MHz FM
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)8 h / 10 h
  • Battery TypeReplaceable AA battery
  • Best Use CasesBudget-conscious / Small-to-medium meetings, churches, schools, and community events
  • TypeProfessional Interpretation
  • Interpreter RequiredYes
  • MonitorYes
  • TX TypeTable-top
  • RX TypeHandheld
  • Channels17
  • Range300 m (984 ft)
  • Frequency72–76 MHz FM
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)Unlimited / 10 h
  • Battery TypeCorded Electric
  • Best Use CasesFixed-venue meetings / Large conferences, churches, courtrooms, seminars
T130T/T131T
  • TypeProfessional Interpretation
  • Interpreter RequiredYes
  • MonitorYes
  • TX TypeTable-top
  • RX TypeHandheld
  • Channels19CH / 50CH
  • Range250 m (820 ft)
  • FrequencyUHF
  • Multi-System OperationT131U / T131R
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)Unlimited / 40 h
  • Battery TypeCorded Electric
  • Best Use CasesFixed-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
  • Interpreter RequiredYes
  • Language Support / InterpretersAccommodates up to 7 interpreters
  • MonitorNo
  • TX TypeHandheld
  • RX TypeHandheld
  • Channels49
  • Range160 m (525 ft)
  • Frequency195–216 MHz
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)20 h / 36 h
  • Battery TypeType-C and contact charging
  • Best Use CasesFully mobile / Multi-site events, churches, schools, and community events
  • Interpreter RequiredYes
  • Language Support / InterpretersAccommodates up to 4–8 interpreters
  • MonitorNo
  • TX TypeHandheld
  • RX TypeHandheld
  • Channels50
  • Range200 m (656 ft)
  • FrequencyUHF
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)10 h / 13 h
  • Battery TypeReplaceable BL-5C battery
  • Best Use CasesReplaceable batteries for extended use / Churches, schools, and community events
  • Interpreter RequiredYes
  • Language Support / InterpretersAccommodates up to 3 interpreters
  • MonitorNo
  • TX TypeHandheld
  • RX TypeEarhook
  • Channels
  • Range200 m (656 ft)
  • Frequency2.4–2.485 GHz
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkNo
  • Battery Life (TX / RX)23 h / 50 h
  • Battery TypeType-C
  • Best Use CasesExtremely 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
  • Interpreter RequiredNo
  • Language Support / Interpreters120+ languages
  • MonitorNo
  • TX TypeHandheld
  • RX TypeEarhook
  • Channels120+
  • Range200 m (656 ft)
  • FrequencyFHSS 2.4G
  • Multi-System OperationNo
  • Noise ReductionYes
  • Two-way TalkYes
  • Battery Life (TX / RX)20 h / 13 h
  • Battery TypeType-C
  • Best Use CasesNo interpreter + International factory tours, multilingual tours, schools, business receptions

What’s in the Package

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

Why Choose Retekess?

Sold in 170+ Countries & Regions

Trusted by customers worldwide.

18+ Years in Business

Built on long-term industry experience.

95% Customer Satisfaction

Chosen by users who value reliable performance.

950,000+ Units Sold

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

Spec

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

FAQ

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!

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Documents

Tour Guide System

TT117-TT118-EN-ES-PT
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