1. Introduction
The Sony RM-EZ4 is a 2-device universal remote control designed for ease of use with large, clearly labeled buttons. This remote allows you to control two different electronic devices, such as a television and a cable/satellite box, from a single unit. This manual provides instructions for setting up, operating, and maintaining your remote control.
2. Safety Information
- Battery Safety: Always use the specified battery type (2 AAA Alkaline batteries). Do not mix old and new batteries, or different types of batteries. Remove batteries if the remote will not be used for an extended period to prevent leakage. Dispose of used batteries according to local regulations.
- Handling: Do not expose the remote control to direct sunlight, high temperatures, humidity, or excessive dust. Avoid dropping the remote or subjecting it to strong impacts.
- Cleaning: Clean the remote with a soft, dry cloth. Do not use abrasive cleaners or solvents.
3. Package Contents
Please check that your package contains the following items:
- Sony RM-EZ4 2-Device Universal Remote Control
- User Manual (this document)
Note: AAA batteries are not included and must be purchased separately.
4. Product Overview
The Sony RM-EZ4 remote features a simplified layout with large buttons for common functions, making it easy to operate.

This image displays the front view of the Sony RM-EZ4 universal remote control, highlighting its large, easy-to-read buttons for power, channel, volume, and number input.
Key Buttons and Functions:
- POWER (Green Button): Turns the selected device ON or OFF.
- TV / CBL/SAT Buttons: Selects which device the remote will control. Press the corresponding button before operating that device.
- CH +/- (Channel Up/Down): Changes channels on the selected device.
- VOL +/- (Volume Up/Down): Adjusts the volume on the selected device.
- MUTE: Silences the audio.
- Number Pad (0-9): For direct channel entry.
- ENTER (ENT): Confirms selections, especially during programming.
- SET: Used for programming the remote.
5. Battery Installation
To install the batteries:
- Locate the battery compartment cover on the back of the remote control.
- Slide the cover downwards or press the latch and lift to open.
- Insert two (2) AAA Alkaline batteries, ensuring the positive (+) and negative (-) terminals match the diagrams inside the compartment.
- Replace the battery compartment cover, sliding it back into place until it clicks securely.
6. Setup and Programming
The RM-EZ4 remote needs to be programmed to control your specific devices. This remote uses a code search method to find the correct operating code for your TV or cable/satellite box.
Programming Your Device (Code Search Method):
Follow these steps carefully to program your remote:
- Prepare the Remote: Remove the batteries from the remote control.
- Discharge Residual Power: Press each button on the remote control twice, holding each press for approximately one second. This helps to clear any residual power.
- Reinstall Batteries: Insert the two (2) AAA Alkaline batteries back into the remote control, ensuring correct polarity.
- Enter Programming Mode: Press and hold the SET button and the POWER button simultaneously for a few seconds until the LED indicator on the remote lights up.
- Select Device Type: While the LED is lit, quickly press and release the device button you wish to program (e.g., TV or CBL/SAT). The LED should remain lit.
- Prepare Your Device: Turn on only the device you intend to control (e.g., your television). Ensure it is not in standby mode.
- Initiate Code Search: Alternately press the CH + button and the POWER button. Press CH +, release, then press POWER, release. Repeat this sequence.
- Identify Correct Code: Continue pressing CH + then POWER until your device (e.g., TV) turns OFF. This indicates that the remote has found a compatible code.
- Save the Code: Immediately press the ENTER (ENT) button to save the code. The LED indicator should turn off.
- Test Functionality: Test the remote by pressing the POWER button to turn the device back ON. Then test other functions like VOL +/- and CH +/-. If all functions work correctly, the programming is complete for that device.
- Repeat for Second Device: If you have a second device (e.g., CBL/SAT box), repeat steps 4 through 10, selecting the appropriate device button in step 5.
If the remote does not control your device after programming, or if some functions do not work, repeat the code search process. It may take several attempts to find the optimal code.
7. Operating Instructions
Once programmed, operating your Sony RM-EZ4 remote is straightforward:
- Select Device: Press the TV or CBL/SAT button to select the device you wish to control. The remote will then send commands to that device.
- Power On/Off: Press the POWER button to turn the selected device on or off.
- Change Channels: Use the CH + or CH - buttons to navigate channels. For direct channel entry, use the number pad (0-9) and then press ENTER if required by your device.
- Adjust Volume: Use the VOL + or VOL - buttons to increase or decrease the volume.
- Mute Audio: Press the MUTE button to temporarily silence the audio. Press it again to restore sound.
Ensure there is a clear line of sight between the remote control and the infrared receiver on your device for optimal performance.
8. Troubleshooting
If you encounter issues with your remote control, refer to the following troubleshooting tips:
| Problem | Possible Cause / Solution |
|---|---|
| Remote does not work at all. |
|
| Remote controls some functions but not others. |
|
| Buttons require excessive force to register. |
|
| LED indicator does not light up during programming. |
|
9. Specifications
- Brand: Sony
- Model: RM-EZ4 (Internal Model Number: RMT-TX100U)
- Product Dimensions: 11 x 5.25 x 1.5 inches
- Item Weight: 4.8 ounces
- Batteries: 2 AAA batteries required (not included)
- Special Feature: Universal Remote
- Max Number of Supported Devices: 2
- Compatible Devices: Television, Cable/Satellite Box
- Color: BLACK
10. Warranty and Support
This product is typically covered by a 1-Year Warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
For technical support, programming assistance, or warranty inquiries, please refer to the contact information provided with your purchase or visit the official Sony support website. When contacting support, please have your product model number (RM-EZ4 or RMT-TX100U) and purchase details ready.





