OKAYO ELECTRONICS CO., LTD., a Taiwan-based manufacturer, was established in 1996 by a group of engineers who possessed extreme passion for wireless communication. We attempt to build reliable, durable and affordable products that help people live in a comfortable way based on different wireless technologies and solutions – Infrared, VHF, UHF, 2.4 GHz, Digital UHF and more. We also recognize that people around the world won’t have the same tastes so we work closely with global customers to build localized products that are dedicated for, of the country. With continuous efforts on marketing exploration, technology research, and quality improvement, Okayo makes itself a leading provider for Wireless Tour Guide Systems, Audio Guide Systems, Wireless Portable Sound System and Wireless Microphone Systems.

Infrared Microphone System, IR Microphone System, Infrared Receiver

OKAYO ELECTRONICS CO., LTD. continually develops the innovative Infrared Microphone System to meet the various market demands and bring multiple benefits to customers always. Our Infrared Microphone System are highly demanded by our clients across the country for optimum quality. In order to ensure longer service life and reliability, our products are manufactured by our vendors using the best quality raw material and latest technology. Whether you need a Infrared Microphone System, or Infrared Microphone System, 2 infrared microphone channels infrared receiver, OKAYO ELECTRONICS CO., LTD. manufactures cost-effective products.
EJ-202IR Dual-channel IR Microphone System


Infrared Microphone System

The infrared receiver EJ-202IR is featured in 2 infrared microphone channels and allowing to be used at simultaneously or unlimited microphone to be operated at school classrooms without interferences or unsecured use in adjacent rooms. No worry for channel selection, unstable frequency interferences or installations!
Specification :

  • Features
  • Specifications
  • Transmitters
  • Chargers
  • Sensors
  • Download
  • Worldwide license free band
  • Support 2 microphone channels
  • Confidential and eavesdropping free
  • Various sensors for option to maximize room signal coverage
  • No interference with each other IR systems installed in adjacent rooms
  • Economic design for budgetary project
Infrared ray wavelength
850 nm
Carrier frequency
2.3 MHz (Ch. A); 2.8 MHz (Ch. B)
Receiving system
TRF (Tuned Radio Frequency)
Maximum deviation
50 kHz, with level limiting
Tone squelch frequency
32.768 kHz
Dynamic range
110 dB
< 1 %
Frequency response
70 Hz ~ 10 kHz
Ambient temperature
- 10 ℃ ~ + 50 ℃
Infrared sensor inputs
2 (F type connector)
Reception range
Approx. 20m (at Hi) / 15m (at Low); line-of sight
Dimensions(D x W x H)
230 × 140 × 47 (mm)
420 g

Infrared Sensor

Infrared Sensor

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OKAYO ELECTRONICS CO., LTD. is the leading supplier of Infrared Microphone System in Taiwan and the surrounding areas. We carry inventory all the time so you’re sure we’ll have your order ready whenever you need it. We can manufacture Infrared Microphone System that meet specific technical requirements. OKAYO ELECTRONICS CO., LTD. has tailored our customer service department, product designs, technical support as well as all other company departments to serve the ultimate goal of upholding the highest standards in customer satisfaction. We appreciate the opportunity to attract your attention and value your feedback.