1. Introduction
Thank you for purchasing the AVIOS Call Bell Wireless Chime Receiver Monitor 340s. This manual provides detailed instructions on how to set up, operate, and maintain your device. Please read this manual thoroughly before use to ensure proper functionality and to prevent damage.
The AVIOS 340s is designed for efficient call management, featuring a clear number display and remote control capabilities, making it ideal for various service environments.
2. Product Components
Please check that all the following items are included in your package:
- AVIOS Call Bell Receiver Monitor (Main Unit)
- Transmitter x 16 (Call Buttons)
- Display Clear Remote Control x 1
- Power Adapter x 1
- User Manual (Japanese)

Image: The AVIOS Call Bell Receiver Monitor 340s shown with its accompanying remote control. The monitor displays numbers in red LED segments.

Image: An illustration of the AVIOS Call Bell System in use within a restaurant environment, showing the monitor, call buttons, and a hand pressing a button.
3. Setup
- Unpacking: Carefully remove all components from the packaging.
- Power Connection: Connect the provided AC power adapter to the monitor's power input port. Plug the adapter into a standard electrical outlet.
- Placement: Place the monitor in a visible location where the displayed numbers can be easily seen by staff. Ensure it is on a stable surface or mounted securely.
- Transmitter Placement: Distribute the call transmitters (buttons) to their designated locations (e.g., tables in a restaurant, patient rooms in a clinic).
- Initial Power On: The monitor will power on automatically once connected to power.

Image: The rear view of the AVIOS Call Bell Monitor, highlighting the power input, external speaker port, and antenna connection port.
4. Operating Instructions
4.1. Display Modes
The monitor supports simultaneous display of 1, 4, or 8 numbers. You can select the display pattern that best suits your needs.
- 1-Number Display: Shows one call number at a time (e.g., 001).
- 4-Number Display: Shows up to four call numbers simultaneously (e.g., 010, A11, 123, 0B2).
- 8-Number Display: Shows up to eight call numbers simultaneously (e.g., 01, 10, 21, 32, A0, B1, C2, D4).

Image: Examples of the 1-number, 4-number, and 8-number display modes on the AVIOS Call Bell Monitor.
4.2. Clearing Displayed Numbers
Use the provided display clear remote control to manage the displayed numbers:
- Clear Single Number: Press the designated button on the remote to clear the most recent or selected number.
- Clear All Numbers: Press the designated button on the remote to clear all currently displayed numbers.
4.3. Setting Transmitter Numbers
Transmitter numbers can be freely set from 01-99 or AA-ZZ to customize your system.
4.4. Volume and Chime Sounds
The monitor features 8 levels of volume adjustment and 7 types of chime sounds. Adjust these settings to suit your environment and preference.
4.5. Anti-Tamper Function
The system includes an anti-tamper function to prevent continuous calls from a single transmitter. If a transmitter button is pressed repeatedly, it will only register a call after a set interval (0-99 seconds), preventing misuse.
4.6. Multiple Monitor Use
It is possible to display calls from a single transmitter on multiple receiver monitors simultaneously, allowing for flexible system expansion.

Image: A diagram illustrating how a single call button can transmit signals to multiple AVIOS receiver monitors, including a wrist-type receiver, and through a repeater antenna.
5. Maintenance
To ensure the longevity and optimal performance of your AVIOS Call Bell System, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the monitor and transmitters. Do not use abrasive cleaners, solvents, or strong chemicals, as they may damage the surface.
- Power Off: Disconnect the power adapter from the outlet when the device is not in use for extended periods.
- Battery Replacement (Transmitters): If a transmitter stops working, the battery may need replacement. Refer to the transmitter's specific instructions for battery type and replacement procedure.
- Environmental Conditions: Avoid exposing the device to extreme temperatures, high humidity, direct sunlight, or dusty environments.
6. Troubleshooting
If you encounter any issues with your AVIOS Call Bell System, please refer to the following common problems and solutions:
- Monitor Not Powering On:
- Ensure the power adapter is securely connected to both the monitor and a working electrical outlet.
- Check if the power outlet is functional by plugging in another device.
- No Display When Transmitter is Pressed:
- Verify that the transmitter's battery is not depleted.
- Ensure the transmitter is within the operational range of the monitor. Obstacles like thick walls can reduce range.
- Check if the transmitter is properly paired with the monitor. Refer to the pairing instructions in the full manual (if applicable).
- Chime Sound Not Working or Too Low:
- Adjust the volume setting on the monitor.
- Ensure the internal speaker is not obstructed. If using an external speaker, check its connection.
- Numbers Not Clearing:
- Ensure the display clear remote control has working batteries.
- Point the remote directly at the monitor and ensure no obstructions.
If the problem persists after trying these steps, please contact customer support.
7. Specifications
| Brand | AVIOS |
| Product Model Number | 400Ds (Note: Product title refers to 340s) |
| Product Dimensions | 3 x 34 x 11 cm |
| Color | Black |
| Accessories | Remote control, AC adapter |
| ASIN | B0D1XS2MH9 |
| Radio Law Compliance | Technical Standards Compliance Certification (Giteki) Construction Design Certification Number: R217-210022 |

Image: Detailed dimensions of the AVIOS Call Bell Monitor, call buttons, and remote control.
8. Warranty and Support
The AVIOS Call Bell Receiver Monitor 340s comes with a 1-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For any inquiries regarding setup changes, troubleshooting, or other support needs, please contact AVIOS customer service. We are committed to providing assistance to ensure your satisfaction with our product.
This product is from a Japanese small and medium-sized enterprise brand, ensuring commitment to quality and customer care.





