Introduction
This manual provides instructions for the Snrigw replacement remote control, designed for use with Onkyo Stereo Receiver models, specifically replicating the functions of the original RC-875S remote for the TX-8020 receiver. This remote is a non-original replacement and offers essential control over your compatible Onkyo home theater system.
Setup
Battery Installation
The remote control requires two AAA batteries (not included) for operation. Follow these steps to install them:
- Locate the battery compartment on the back of the remote control.
- Slide the battery cover downwards to open it.
- Insert two AAA batteries, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Slide the battery cover back into place until it clicks securely.

Figure 1: Battery installation. The remote requires two AAA batteries, which are not supplied.

Figure 2: Front and back view of the remote control, illustrating the location of the battery compartment.
Initial Use
This replacement remote control is designed for immediate use with compatible Onkyo TX-8020 receivers. No programming or pairing is required. Simply install the batteries, and the remote is ready to operate your receiver.
Operating Instructions
The Snrigw replacement remote control provides access to the primary functions of your Onkyo TX-8020 stereo receiver. It replicates key controls such as power on/off, volume adjustment, input source selection, and audio settings.

Figure 3: Front view of the remote control with button layout.
Basic Functions
- Power Button: Press the POWER button to turn the receiver on or off.
- Volume Control: Use the VOL+ and VOL- buttons to adjust the audio volume.
- Input Selection: Select your desired audio source (e.g., CD, FM, AM, BD DVD, TAPE, DOCK, PHONO, TV) using the dedicated input buttons.
- Audio Adjustments: Buttons like BASS UP/DOWN and TREBLE UP/DOWN allow for basic audio tone adjustments.
- Navigation: The central OK button and directional arrows are used for menu navigation if supported by the receiver.
Operating Range
The remote control operates using infrared (IR) technology. For optimal performance, ensure a clear line of sight between the remote and the IR sensor on your Onkyo receiver. The maximum effective range is approximately 30 feet (9 meters).

Figure 4: Remote control operating range and angle.
Maintenance
Battery Replacement
Replace the AAA batteries when the remote's response becomes inconsistent, the operating range decreases, or it stops functioning. Always replace both batteries at the same time with new ones.
Cleaning
To clean the remote control, use a soft, dry cloth. Do not use liquid cleaners, abrasive pads, or chemical solvents, as these can damage the remote's surface or internal components.
Troubleshooting
If you experience issues with your Snrigw replacement remote control, please refer to the following common solutions:
- Remote Not Responding:
- Check if the batteries are installed correctly with the correct polarity (+/-).
- Replace the batteries with fresh AAA batteries.
- Ensure there are no obstructions between the remote control and the infrared sensor on your Onkyo receiver.
- Point the remote directly at the receiver's IR sensor.
- Some Functions Do Not Work:
- This is a replacement remote and may not support every single function or button present on the original Onkyo RC-875S remote. For example, some original remotes may have a dedicated mute button that this replacement does not.
- Verify that your receiver is an Onkyo TX-8020 model, as compatibility is specific.
- Limited Operating Range:
- Replace the batteries, as low battery power can reduce the remote's effective range.
- Ensure that strong light sources, such as direct sunlight or bright fluorescent lights, are not interfering with the infrared signal.
Specifications
| Brand | Snrigw |
| Model Number | RC-875S (Replacement) |
| Compatible Devices | Onkyo TX-8020 Stereo Receiver (Home Theater) |
| Connectivity Technology | Infrared (IR) |
| Controller Type | Button Control |
| Maximum Range | 30 Feet (9 meters) |
| Power Source | 2 x AAA Batteries (not included) |
| Material | Durable ABS Plastic |
| Special Feature | Ergonomic Design |
Warranty and Support
Warranty information for this replacement remote control is not explicitly provided in the product details. For specific warranty terms, return policies, or technical support, please refer to your purchase documentation or contact the seller directly through the platform where the product was purchased.