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IR 30 Meters Wireless Headphones System
For IELTs TOEFL Test, Stereo Sound
IR-T50/IR900DN
is an easy-to-use IR Wireless system ensures participants in a conference room, courtroom, classroom or other mid-sized venue receive direct, clear communication of your message without sacrificing security and privacy. It’s an ideal solution for hearing assistance, simultaneous language interpretation, audio description or private listening applications, like conference meetings, classrooms, lecture halls, theaters, churches, auditoriums, function rooms as well as noisy factories.
This provides up to 300 square meters of coverage and supports an additional emitter for additional coverage area. Placing additional slaves in the same room increases coverage and enhances freedom of movement.
Features
Infrared (IR-T50) Transmitter Specifications
| Frequency | 2.3MHz/2.8MHz |
| Distance | Up to 30M |
| Volt. | DC 20V |
| Current | 550mA |
| Input Impendance | 2.2k ohm (Audio in) | 2.2k ohm (Mic. in) |
Infrared (IR-900DN) Headphone Specifications
| Frequency | 2.3MHz/ 2.8MHz |
| Voltage | 2.0-3.0V (AAA batteries *2) |
| Current | 30mA |
| Output power | 5mQ |
| S/N Ratio | 75dB |
| THD | <1% |
| Frequency Response | 50Hz ~ 12K Hz |
| Receiver sensitivity | 48dBuvemf |
| Speaker | 40mm mylar |
The complete system is based on Infra-red technology, ensure private and confidential.
One more headphone option- rechargeable wireless headphone IR988DN, working about 20 hours per a full charge!

More Wireless Audio System We're Good At
Shenzhen Changyin Electronic Co. Ltd. (INDA®) is the leading wireless audio device company in developing and manufacturing wireless headphones since 2007, whose products strictly follow CE ROHS FCC standards.
With over 15 years of experience, our infrared headphone system has been using in more than 120+ areas worldwide. Either a trial or bulk orders will be taken care of efficiently, under the support of below:
Factory Coverage: 1500m²
R & D Staff: 10+
Monthly Output: 90, 000pcs
Warranty: 15+ Months
Your satisfaction is always our priority.


Q1: What's the warranty of IR Headphones System?
A: 15 months warranty if defects, not artificial damage.
Q2: What’s the wireless range of your transmitters/headphones?
A: about 300 square meters.
Q3: Where do the IR Education Wireless Headphones System can be used?
A: Conference room, courtroom, classroom or other mid-sized venue especially when you like them to be privacy and safe.
Q4: How many pcs of headphones can be used for one transmitter?
A: Endless headphones, as long as the space can hold so many people.
Q5: Can I print my logo?
A: Yes.

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