User Manual

Okayo WT-350 D

City Jungle Edition

1. Interface

  1. Talk-Back Function Slider (TX)
  2. PTT Button (RX)
  3. Signal Indicator
  4. ⏻︎ / Mute Button (TX)
  5. Built-in Microphone
  6. Talk-Back Function Indicator
  7. Display
  8. +/- Buttons
  9. Charging Port

2. Signal Indicator

Status

Transmitter (TX)

Receiver (RX)

Green

Full power

Red

Low power (30 min ↓)

LED is solid

Device is on

Device joined the group

LED flashes slowly

Microphone muted

Device is out of group

LED flashes quickly

Grouping in progress

-

3. Battery Level Indicator

Battery charge percentage

Symbol on display

50% 🠕

Full battery

5~50% 🠕

Medium battery

5% 🠗 (< 30 min)

Low battery

4. Low Battery Level

⚠ Battery Warning

  • Ensure that each device has a compatible AA battery or rechargeable battery installed.
  • Replace the battery when the device indicates a low battery signal.

5. Turning on the device

Press and hold the ⏻︎ button for 1 second to turn on the device.

6. Creating a group

⚠ Note
Grouping is performed by the guide from the transmitter (TX). Group members only turn on their receivers (RX).

  • Press and hold the – and ⏻︎ buttons simultaneously for 1 second to turn on the transmitter (TX).
  • Within 5 seconds, select a channel using the + / - buttons and confirm by pressing the ⏻︎ button.
  • When the signal indicator on the transmitter starts flashing rapidly, turn on the receiver ⏻︎ to join the group.
  • When the receiver shows the same channel as the transmitter and the solid signal indicator lights up, grouping is complete.
  • Exit by pressing the ⏻︎ button on the transmitter and begin the tour.

7. Adjusting headphone volume

Adjust the volume using the + and - buttons (0~9, default: 5) on each device.

8. Giving group members the floor

  • Slide the Talk-Back function slider on the transmitter (TX) upwards to activate this function for the group.
  • The “t” icon appears on the transmitter (TX) and receiver (RX) displays. On the transmitter (TX), the Talk-Back function indicator lights up blue.
  • Press the PTT button on the receiver (RX) to ask a question (the blue indicator on the receiver lights up when a group member has the right to speak).

9. Adjusting settings

  • Press and hold the ⏻︎ and + buttons simultaneously for 1 second to turn on the device.
  • Adjust each setting with the + and - buttons, confirm by pressing the ⏻︎ button.
  • Settings mode will automatically exit after the last configuration is completed.

Transmitter (TX)

Signal strength symbol

Signal output power

The higher the power, the greater the operating range.

  • high
  • low (default)

Receiver (RX)

Power saving

Power saving

The device will automatically turn off if the signal from the transmitter is lost for 20 minutes.

  • on (default)
  • off

HAC

HAC

Activate this setting (On) for HAC system users.

  • on
  • off (default)

Out-of-range alarm

Out-of-range alarm

The alarm will activate in the receiver (RX) if it is out of the transmitter's (TX) range for 1 minute. To deactivate the alarm, move closer to the transmitter (TX).

  • on
  • off (default)

10. Remote channel change

⚠ Note
Remote channel change is recommended when interference occurs.

  • Press and hold the + and – buttons simultaneously on the transmitter for 1 second to unlock channel changes (the 🔒︎ icon will disappear from the display).
  • Select a different channel using the + and - buttons. The new channel will be automatically locked after 5 seconds of inactivity (the 🔒︎ icon will appear on the display).
  • Receivers will be automatically and remotely switched to the new, selected channel.

11. Turning off the device

Press and hold the ⏻︎ button for 2 seconds on each device to turn it off.

12. Increasing device power (additional function)

⚠ Note
If necessary, it is possible to set a very high power to achieve a greater range.

  • When the transmitter (TX) is on, press and hold the ⏻︎, +, and – buttons for 10 seconds. The “.” icon will appear on the display.
  • Press and hold the ⏻︎, +, and – buttons again for 10 seconds to turn off this function. The "." icon will disappear from the screen.
  • The setting will be remembered until manually changed (turned on or off).

13. Specifications

Parameter

Value

Emission modulation

4 GFSK, digital

Radio frequency

823 ~ 832 + 863 ~ 865 MHz

Channels

44

Frequency response

200 ~ 3,400 Hz

Range (line of sight)

100+ m

Battery life

Transmitter: 15+ h, receiver: 20+ h

Battery

1 x AA Ni-MH or alkaline battery

Dimensions (with antenna)

63 x 132 x 70 mm

Weight (with battery)

approx. 65 g