Introduction
The SIMOLIO 2.4G Digital TV Wireless Headphones are designed to provide a clear and comfortable audio experience for TV watching, especially for seniors. Featuring advanced 2.4GHz FHSS technology, these headphones ensure no pairing issues and no audio delay, allowing for seamless enjoyment of your favorite programs. The robust signal can penetrate walls and ceilings, offering an effective range of up to 100 feet for freedom of movement.
Key features include voice highlighting and noise reduction to enhance dialogue clarity, and automatic signal control to maintain stable output volume. Users can customize their listening experience with tone and balance controls, and switch between mono/stereo modes. A unique ambient sound mode allows you to hear surrounding conversations without removing the headphones. The system also includes a spare battery that charges in the transmitter base, ensuring continuous use.

Figure 1: SIMOLIO Wireless TV Headset System with key features.
What's in the Box
Upon opening your SIMOLIO 2.4G Digital TV Wireless Headphones package, you will find the following components:
- One Set of Headsets
- Transmitter
- AC Power Adapter
- Optical Cable, RCA Cable, AUX Cable
- Eartips, User Manual, Quick Guide

Figure 2: All components included in the product package.
Setup
Setting up your SIMOLIO headphones is straightforward. The system supports multiple audio output options from your TV or AV devices, including Optical, RCA, and AUX. Ensure your TV's audio output format is set to PCM for digital connections.
Connecting to Your TV/AV Device
Identify the available audio output ports on your TV or AV device. The SM-824D1 transmitter has corresponding input ports for seamless connection.

Figure 3: Common TV/AV device audio output options.
For Smart TVs, the optical connection is often preferred for superior sound quality.

Figure 4: Connecting the transmitter to a Smart TV via optical output.
Setting TV Audio Output Format (PCM)
For digital audio connections (Optical), it is crucial to set your TV's audio output format to PCM. This ensures compatibility with the wireless headphones.
Video 1: This video provides a comprehensive guide to understanding TV compatibility and adjusting TV-related audio settings, including setting the audio format to PCM.
Video 2: Learn how to troubleshoot and fix 'No Sound' issues when connecting to a Samsung TV's optical output.
Video 3: A guide to resolving 'No Sound' problems with your LG TV's optical output.
Video 4: Instructions on how to fix 'No Sound' from your Philips TV when connecting with optical.
Operating
The SIMOLIO headphones are designed for intuitive operation, allowing you to easily control your audio experience.
Audio Customization
Adjust the TONE to find the optimal sound frequency for clear audio. The balance control allows for independent right/left volume adjustment, ensuring equal hearing in both ears. You can also switch between Mono/Stereo modes.

Figure 5: Left-Right Balance Adjustment for personalized listening.
Ambient Sound Listener
Activate the ambient sound mode (MIC) to hear conversations nearby without needing to remove your headphones. This feature is convenient for interacting with others while still enjoying your TV program.

Figure 6: Ambient Sound Listener (MIC ON) feature in use.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your SIMOLIO headphones.
Battery Care
The headphones come with a rechargeable and replaceable battery. A spare battery is always charged and ready in the transmitter base, ensuring uninterrupted TV watching. The system incorporates top-grade safety battery features, including 0V charging prohibition, pressure relief vent valve, short-circuit protection, and over-charge/over-discharge protection.

Figure 7: Plug & Charge functionality with spare battery slot.

Figure 8: Detailed view of the safety battery features.
Troubleshooting
If you encounter any issues with your SIMOLIO headphones, please refer to the setup section and the following videos for common troubleshooting steps related to sound output and compatibility.
- Ensure all cables are securely connected to the correct audio output ports on your TV/AV device and the transmitter.
- Verify that your TV's audio output format is set to PCM, especially for optical connections.
- Check the volume levels on both your TV and the headphones.
For specific TV brand troubleshooting, refer to the videos in the Setup section.
Specifications
| Feature | Detail |
|---|---|
| Model Name | SM-824D1 |
| Connectivity Technology | Wireless (RF) |
| Headphones Jack | RCA |
| Noise Control | Active Noise Cancellation |
| Included Components | AC Power Adapter, Transmitter, Eartips, User Manual, Quick Guide, Optical Cable, RCA Cable, AUX Cable, One Set of Headsets |
| Age Range (Description) | Adult |
| Material | Plastic |
| Item Weight | 2.04 Ounces |
| Charging Time | 3 Hours |
| Frequency Range | 20 Hz - 20,000 Hz |
| Audio Latency | 10 Milliseconds |
| Cable Length | 2 Meters |
| Color | White |
| Ear Placement | Over Ear |
| Form Factor | In Ear |
| Impedance | 32 Ohm |
Warranty and Support
SIMOLIO offers protection plans for your product. You may consider purchasing a 2-Year Protection Plan for $20.99 or a 3-Year Protection Plan for $28.99. A Complete Protect plan is also available for $16.99/month, covering all eligible past and future purchases until cancelled.
For detailed instructions, troubleshooting, and support, please refer to the official User Guide (PDF) available online: SIMOLIO User Guide (PDF).





