1. Introduction
The VIVOSUN 10"x20.75" Seedling Heat Mat is designed to provide consistent and even heat to optimize conditions for accelerating plant growth, germination, and rooting. It features a built-in temperature controller for precise heat management and is constructed with durable, waterproof materials for safe and reliable operation.

Image: The VIVOSUN 10"x20.75" Seedling Heat Mat with its integrated temperature controller.
2. Safety Instructions and Warnings
- DO NOT IMMERSE IN WATER: This product is IP67-rated waterproof, meaning it is protected against temporary immersion in water. However, for prolonged safety and product longevity, avoid submerging the mat or controller in water.
- Placement: Place the mat on a well-drained surface without standing water. For warmer mat temperatures, place it on an insulated surface rather than a cold floor.
- Avoid Sharp Objects: Ensure the mat is free of sharp points or objects that might puncture the mat. Do not place any heat insulating materials over the heat mat, as it may cause it to overheat.
- Electrical Safety: Plug the mat into a standard 120V power source. Ensure the power outlet is properly grounded.
- Storage: When not in use, please place the heating pad flat on the surface or roll it gently. Avoid folding the heating pad when using or storing to prevent damage.
3. Product Features
- Durable Materials: Constructed from durable PVC and PET film, meeting MET standards.
- Far-Infrared Heating Technology: Provides consistent and even heat distribution, expanding the heating area and preventing root scorching with double insulation.
- IP67-Rated Waterproof: Enables safe operation in damp/humid environments and protects against water damage or electrical hazards.
- Dual Digital Display Controller: Allows users to set desired temperatures and displays real-time pad temperature. Features a 3-button interface for easy operation and calibration.
- Overheating Protection: Includes built-in protection that automatically powers off the pad if the temperature becomes too high (maximum setting 122°F / 50°C).
Multi-Layered Structure

Image: Exploded view of the heat mat's construction, showing the double PVC mats and internal heating film for uniform and safe heating.
Far-Infrared Heating Technology

Image: Visual representation of far-infrared heating technology providing consistent heat to seedlings on the mat.
IP67 Waterproof Design

Image: The heat mat surface with water droplets, demonstrating its IP67 waterproof capability.
4. Setup Instructions
- Unpack: Carefully remove the heat mat and controller from its packaging.
- Placement: Lay the heat mat flat on a stable, dry, and insulated surface. Avoid placing it directly on cold floors or surfaces that may draw heat away.
- Connect Power: Plug the power cord of the heat mat into a standard 120V electrical outlet.
- Position Seedling Trays: Place your seedling trays or other items directly on the heat mat. For optimal rooting and germination, consider covering your plant tray with a humidity dome.

Image: Seedling trays placed on the VIVOSUN heat mat, ready for germination.
Video: This video demonstrates the VIVOSUN Seedling Heat Mat with its dual digital display temperature controller in use for plant germination.
5. Operating Instructions
- Power On/Off: Press the 'ON/OFF' button on the digital controller to turn the heat mat on or off.
- Set Temperature: Use the '+' and '-' buttons to adjust the desired temperature. The controller will display both the 'REAL TEMP' (current temperature of the pad) and the 'SET TEMP' (your target temperature).
- Temperature Range: The controller allows setting temperatures from 32°F to 122°F (0°C to 50°C).
- Automatic Heating: The mat will automatically heat to your set temperature and maintain it. If the temperature exceeds the maximum safe limit, the built-in overheating protection will activate.

Image: The digital temperature controller, showing how to adjust settings and monitor real-time temperature.
Video: This video provides a detailed overview of the VIVOSUN Seedling Heat Mat's temperature controller and its functions.
6. Applications
The VIVOSUN Seedling Heat Mat is versatile and can be used for various applications beyond plant germination:
- Plant Germination: Ideal for starting seeds and promoting healthy root development for vegetables, herbs, and flowers.
- Terrarium Warming: Provides a warm environment for reptiles and other terrarium inhabitants.
- Home Brewing: Can be used to maintain optimal fermentation temperatures for homebrewed beverages.
- Indoor Gardening: Supports various indoor plant growth needs by providing consistent bottom heat.

Image: A collage illustrating diverse uses of the heat mat, including plant sprouting, terrarium warming, indoor gardening, and home brewing.
7. Specifications
| Feature | Detail |
|---|---|
| Model | XHC-F142 |
| Product Size | 10" x 20.75" |
| Voltage | 120V AC |
| Wattage | 20W |
| Temperature Range | 0-50°C (32-122°F) |
| Waterproof Rating | IP67 |
| Power Cord Length | 5.9 ft. |
| Certifications | UL & MET-Certified |

Image: A diagram detailing the physical dimensions and electrical specifications of the VIVOSUN heat mat.
8. Care and Maintenance
- Cleaning: The IP67-rated waterproof surface is safe to scrub. Disconnect from power before cleaning. Use a damp cloth and mild soap if necessary. Ensure the mat is completely dry before reconnecting to power.
- Storage: When not in use, gently roll the mat and store it in a dry, cool place. Avoid sharp creases or heavy objects on top of the rolled mat.
- Inspection: Regularly inspect the mat and power cord for any signs of damage, wear, or fraying. Discontinue use if any damage is observed.
9. Troubleshooting
- Mat Not Heating: Ensure the power cord is securely plugged into a functional 120V outlet. Check the temperature controller to confirm it is powered on and the set temperature is above the real temperature.
- Inconsistent Temperature: Verify that the mat is placed on an insulated surface. Cold ambient temperatures or drafts can affect performance. Ensure no insulating materials are covering the mat, which could lead to overheating and automatic shutdown.
- Controller Display Issues: If the display is not working, check the power connection. If issues persist, contact customer support.
10. Warranty and Support
VIVOSUN products are manufactured to high-quality standards. For warranty information, technical support, or any product-related inquiries, please visit the official VIVOSUN website or contact their customer service directly. Keep your purchase receipt for warranty claims.
You can find more information and support at the VIVOSUN Store on Amazon.