1. Introduction
Thank you for choosing the iTHERAU 2 Person Infrared Steam Sauna Box. This portable sauna system is designed to provide a relaxing and rejuvenating experience for two individuals, combining the benefits of steam with 660nm + 850nm red light therapy. It features a 5-layer insulated, waterproof tent, dual 1400W/3L steamers, and includes two folding chairs for your comfort. Please read this manual thoroughly before setup and operation to ensure safe and optimal use of your sauna.

Image 1.1: The iTHERAU 2 Person Infrared Steam Sauna Box, designed for shared comfort.
2. Safety Information
WARNING: To reduce the risk of burns, fire, electric shock, or injury to persons, observe the following:
- Always supervise children when the sauna is in use.
- Do not use the sauna if you are pregnant, have a heart condition, high blood pressure, or any other serious medical condition without consulting a physician.
- Avoid using the sauna immediately after a heavy meal or while under the influence of alcohol or drugs.
- Limit sauna sessions to 30-45 minutes to prevent overheating and dehydration.
- Ensure proper ventilation in the room where the sauna is used.
- Do not block the steam outlet or red light therapy lamp.
- Keep all electrical components away from water.
- Unplug the unit from the power outlet when not in use and before cleaning.
- Use only the provided power cords and accessories.
3. Package Contents
Verify that all components are present in your package:
- Sauna Tent (5-layer waterproof fabric)
- Reinforced Stainless Steel Frame Poles
- 2 x 1400W/3L Steamers with Remote Controls
- Red Light Therapy Lamp (660nm + 850nm)
- 2 x Folding Chairs
- Steam Hoses and Connectors
- Floor Mat
- Protective Eyewear (for red light therapy)
- Instruction Manual

Image 3.1: Overview of all included components for the sauna system.
4. Setup Instructions
Follow these steps to assemble your iTHERAU 2 Person Infrared Steam Sauna Box:
- Assemble the Frame: Connect the stainless steel frame poles according to the diagram provided. Ensure all connections are secure.
- Install the Sauna Tent: Drape the sauna tent over the assembled frame. Ensure the zippers are aligned for easy entry and exit.
- Secure the Tent: Zip up the tent completely to form the sauna enclosure.
- Install Red Light Therapy Lamp: Locate the designated attachment points inside the sauna tent and securely hang the red light therapy lamp. Ensure it is positioned safely and does not obstruct movement.

Image 4.1: Step-by-step guide for sauna tent and red light lamp installation.
Steamer Setup:
- Position Steamers: Place the two steamers outside the sauna tent on a flat, stable surface.
- Connect Hoses: Attach one end of each steam hose to the steam outlet of each steamer.
- Insert Hoses into Tent: Guide the other end of each steam hose through the designated openings in the sauna tent. Ensure a snug fit to prevent steam leakage.
- Fill Steamers: Open the steamer lids and fill each steamer with clean water up to the maximum fill line. You may add essential oils, medicinal herbs, mugwort, or ginger slices to the designated compartment if desired.
- Power On: Plug the steamers into a grounded electrical outlet.

Image 4.2: Detailed steps for connecting the steamers to the sauna tent.
5. Operating Instructions
Once the sauna is set up, follow these steps for operation:
- Prepare for Session: Place the folding chairs inside the sauna tent. Wear appropriate clothing (e.g., a towel or light robe).
- Power On Steamers: Turn on both steamers using their respective power buttons or remote controls.
- Adjust Settings: Use the remote controls to set the desired temperature level (1-15 levels) and timer (1-99 minutes) for each steamer. The dual 1400W/3L steamers provide rapid heating and 360° steam distribution.
- Activate Red Light Therapy: Turn on the red light therapy lamp. It emits 660nm (visible red light) and 850nm (near-infrared light) for therapeutic benefits. Wear the provided protective eyewear if you find the light too intense.
- Enter Sauna: Carefully enter the sauna tent and sit on the folding chairs. Close the double zipper securely.
- Monitor Session: Relax and enjoy your sauna session. The transparent zippered window allows for quick exit if needed. A built-in storage pocket is available for your phone or glasses.
- End Session: Once the timer expires or you decide to finish, exit the sauna. Turn off the steamers and red light therapy lamp. Unplug the units from the power outlet.

Image 5.1: Explanation of 660nm and 850nm red light therapy benefits.

Image 5.2: The dual 3L sauna steamers, showing controls and capacity.
6. Maintenance
Regular maintenance ensures the longevity and hygiene of your sauna:
- Cleaning the Tent: After each use, wipe down the interior of the sauna tent with a damp cloth. The easy-clean, odor-free fabric repels stains. Allow it to air dry completely before folding or storing.
- Cleaning Steamers: Regularly empty any remaining water from the steamers. Clean the water reservoir with a mild detergent and rinse thoroughly. Descale the steamers periodically using a vinegar solution to prevent mineral buildup.
- Storage: When not in use, disassemble the sauna tent and frame. Store all components in a dry, cool place away from direct sunlight.
- Red Light Lamp: Wipe the red light therapy lamp with a dry, soft cloth. Do not use abrasive cleaners or immerse in water.

Image 6.1: The 5-layer advanced insulation of the sauna tent, highlighting its waterproof and heat-retaining properties.
7. Troubleshooting
If you encounter issues with your iTHERAU sauna, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No steam production | Steamer not plugged in; water level too low; steamer not turned on. | Ensure steamer is plugged in and powered on. Fill water reservoir to appropriate level. |
| Sauna not heating sufficiently | Tent zippers not fully closed; low temperature setting; insufficient preheating time. | Ensure all zippers are closed. Increase temperature setting. Allow 5-10 minutes for preheating. |
| Red light lamp not working | Lamp not plugged in; power switch off. | Check power connection and ensure the lamp's power switch is on. |
| Remote control not working | Batteries dead; remote out of range. | Replace batteries. Ensure remote is pointed at the steamer's sensor within range. |
If the problem persists, please contact iTHERAU customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | Psb-2s2c |
| Product Dimensions | 50 x 71 x 41.3 inches (W x L x H) |
| Item Weight | 29.5 pounds |
| Steamer Power | 110V/1200W (each steamer) |
| Steamer Capacity | 3.0L (each steamer) |
| Timer Settings | 1-99 Minutes |
| Temperature Levels | 15 Levels of Adjustment |
| Red Light Wavelengths | 660nm (visible red light) + 850nm (near-infrared light) |
| Tent Material | 5-layer advanced insulation (Inner Layer: Heat-Reflective, Oxford Waterproof Layer, Thickened Cotton, High-density Cotton, Waterproof Polyester Satin Fabric) |
| Batteries | 1 Lithium Polymer battery required (included for remote) |
9. Warranty & Support
iTHERAU products are manufactured to high-quality standards. For warranty information, product support, or to report any issues, please contact iTHERAU customer service through the retailer where the product was purchased or visit the official iTHERAU website. Please retain your proof of purchase for warranty claims.





