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.

museum audio guide system, museum audio tour systems

OKAYO ELECTRONICS CO., LTD. has a wide variety of Museum Group Guide System for many different applications. With many years of experience, we have the core technical knowledge for Museum Group Guide System to satisfy our customers' demands. Our Museum Group Guide System is known for their long work life, easy handling, and low maintenance. This has been possible with the use of the best raw materials that go into the manufacturing of our expansive product line. Thank you for visiting our website and we hope you enjoy our products as much as we do.
WT-500RI Museum Group Guide System


Museum Group Guide System

WT-500RI is specially developed to help tour management in big museums or events where massive tour groups will visit every day. To overcome the fast turnaround rate, help tour group management, conduct charging and storage, and manage visit flow to a higher level and end of the day, etc. That's what WT-500RI was born to solve these issues.
Specification :

  • Features
  • Specifications
  • Transmitters
  • Chargers
  • Accessories
  • Download
  • Frequency band on 584 ~ 870 MHz (region dependent)
  • 40 ~ 192 preset channels (frequency band dependent)
  • Up to 100 meter wireless reception range
  • Consume 1 AA battery (Ni-MH or Alkaline)
  • 12+ hours battery run time (based on 2,500 mAh, Ni-MH)
  • Rechargeable design
  • Auto channel management (work with dedicated charger HDC-550+)
  • Dedicated rack-mountable 50 slot charger HDC-550+
Oscillation type
PLL Synthesized Control OSC
Carrier frequency range
584 MHz ~ 870 MHz (region dependent)
Operating temperature
-10℃ ~ 50℃
Power requirements
1 x AA (1.2V/2500 mAh, Ni-MH) or 1 x AA (1.5V Alkaline)
40 or 80 (region dependent)
Frequency response
150 Hz ~ 4 kHz
Dynamic range
60 dB
Operating range
100 M (line of sight)
Dimensions (DxWxH)
24 x 40 x 97 mm
70 g (with battery)
Receiving mode
PLL single-channel
RF spurious rejection
60 dB
IMD rejection
50 dB
Double intermediate
584 ~ 664 MHz @ 45 MHz/455 kHz ; 794 ~ 870 MHz @ 21.4 MHz/455 kHz
Audio level
300 mV
Earphone connector
3.5 mm
Battery run time (Ni-MH/Alkaline)
12 hours/ 15 hours typical

Single-sided Earphone

Single-sided Earphone
(soft shell)

Over-the-Head Headphone

Over-the-Head Headphone

Single-sided Earphone
(hard shell)

Combo Carry Case
(w/ removable foam)

32 unit Carry Case

4 unit Hand Bag


90cm Induction Loop

1600mA Ni-MH Rechargeable

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OKAYO ELECTRONICS CO., LTD. has been the world leader in manufacturing Museum Group Guide System, to achieve the customer's needs, we had to obtain a maximum level of performance, business, and manufacturing excellence. Renowned for their higher efficiency, accuracy and durability, our Museum Group Guide System is setting standards of performance and high quality in the entire market. OKAYO ELECTRONICS CO., LTD. is committed to developing Museum Group Guide System that ultimately create innovative products that exceed customer expectations. Thank you for your time and business, if you have any questions or needs, please do not hesitate to contact us.