TG - A2W series - A2W Slave Wireless Buttons Registration Setting

Purpose

This guide demonstrates how to easily set up and register the Omron A2W wireless pushbutton. It covers the basic pairing process, and operation modes to help users get started quickly.

Problem Explanation/Objective

In traditional control systems, wired pushbuttons often require complex installations. The Omron A2W wireless pushbutton addresses these issues with:

Battery-less operation: Generates its own power during each press.

Wireless simplicity: Uses the sub-GHz band to reduce interference and extend range.

Low maintenance: No wiring or battery replacement needed.

Fast pairing and confirmation: Easy registration and LED feedback ensure reliable setup.

Supported devices

This setup applies to the following Omron A2W models:

Master Unit:

Slave Buttons:

**Available in multiple button/flange color configurations

Requirements

To complete the setup, you will need:

• 1x A2W Master Unit
• 1 or more A2W Slave pushbuttons
• 24 VDC Power supply for the Master Unit
• Optional: PC Tool (for signal and environment visualization)

Procedure

1. Power ON the Master Unit

• Connect the Master Unit to a 24 VDC power supply.
• Confirm the green PWR LED is lit.

2. Check Initial Status

• On the slave button, a red LED indicates it is not yet paired with the Master Unit.

3. Enter ID Registration Mode

• Slide the Mode Settings Switch on the Master Unit to “ID”.

4. Select Output Channel

• Use the Output Settings Switch to select the desired channel (1–8).
  • Example: For channel 2, turn the output settings switch to position 2.

5. Register the Wireless Pushbutton

• Press the wireless pushbutton 3 or more times within 3 seconds.
• Observe the RCV LED on the Master Unit:
  • Green = Successful registration 
  • Flashing green = Registration failed
  • No light = No signal received

If successful, the pushbutton will also flash a green confirmation LED, indicating it has received the pairing signal from the Master Unit.

6. Switch to TEST Mode

• Move the Mode Settings Switch to “TEST”.
• Press the pushbutton to confirm operation:
  • A green LED will light up on the pushbutton.
  • The corresponding OUTPUT LED on the Master Unit will turn yellow.
  • No actual output is triggered in TEST mode, this is just a connectivity test.

7. Enable Output

• Move the Mode Settings Switch to “RUN”.
• Press the button again:
  • A green LED on the button confirms connection.
  • The Master Unit will now trigger a real output at the configured terminal.
  • The OUTPUT LED will light up.

Notes:

Reception confirmation LEDs on both the Slave button and Master Unit indicate wireless signal strength:

Green: Strong signal

Yellow: Weak signal

Red: No reception

Maximum of 8 slave buttons can be registered to a single Master Unit.

Ideal communication distance is up to 100 meters (line of sight).

Date/Revision History

First review 9/22/2025 V1.0

Author: 

Aimee Rivera, Technical Support Engineer

References

A2W Series Wireless Pushbutton Datasheet