1. Product Overview
The Spider Farmer Seedling Heat Mat (Model XHC-F042) is designed to provide a stable and uniform heat source for seed germination, plant propagation, and other applications requiring controlled warmth. This mat features a built-in temperature controller for precise heat management.

Image 1.1: Spider Farmer Seedling Heat Mat (10"x20.75") with integrated temperature controller.
Key Features:
- Stable & Uniform Heat: Utilizes far-infrared technology to quickly heat the root area 50-77°F (10-25°C) above ambient temperature within 2 minutes, promoting efficient germination and rooting.
- Premium Material & Reliable Quality: Constructed with a five-layer design, including heavy-duty PVC and double-layer insulating PET, ensuring durability and safety. Complies with MET and UL standards.
- Easy Temperature Control: Features a built-in digital thermostat controller with an adjustable range of 32-110°F (0-43°C) for precise temperature management.
- Water-Resistant & Easy Cleaning: IP67-rated waterproof material allows for easy cleaning and prevents splashing, ensuring safe and prolonged use.
- Wide Application: Suitable for seed germination, hydroponics, home brewing, and terrarium warming.
2. Safety Information
Please read and understand all safety warnings before operating this product to prevent injury or damage.
- Electrical Safety: This appliance has a polarized plug (one blade is wider than the other). To reduce the risk of electric shock, this plug is intended to fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician. Do not modify the plug in any way.
- Water Immersion: Do not immerse the heat mat or controller in water. The mat is IP67 rated for splashes and sprays, but not full immersion.
- Overheating: When testing the temperature, the bottom of the mat needs to be powered on for no more than 30 minutes without being covered. Prolonged uncovered operation may lead to excessive heat.
- Indoor Use Only: This product is designed for indoor use only.
- 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.
3. Setup Instructions
- Unfold the Heat Mat: Carefully unroll and flatten the heat mat on your desired surface. Ensure the surface is dry and well-drained.
- Positioning: For optimal performance, place the mat on an insulated surface. Avoid placing directly on cold concrete floors, which can reduce heating efficiency.
- Connect to Power: Plug the heat mat's power cord into a standard 120V power outlet. Ensure the polarized plug is inserted correctly.
- Optional Humidity Dome: Covering your plant tray with a humidity dome or similar cover can help maintain humidity and further improve rooting conditions.

Image 3.1: Visual guide for connecting the heat mat and operating the controller.
4. Operating Instructions
The built-in thermostat controller allows for precise temperature management.

Image 4.1: Digital Temperature Controller features.
- Power On/Off: Press and hold the power button (⏻) for 3 seconds to turn the controller on or off.
- Adjust Temperature: Use the + and - buttons to set your desired temperature. The adjustable range is 32-110°F (0-43°C). The display shows both the "REAL" (current) and "SET" (target) temperatures.
- Screen On/Off (Sleep Mode): Short press the power button (⏻) to turn the digital screen on or off. This "Sleep Mode" allows the mat to continue running without the screen's light, which can be beneficial in dark environments.
- Power Failure Memory: The controller retains the last-run settings in case of a power outage, eliminating the need to reset the temperature.
Note: The controller display temperature and the actual temperature of the heating mat may have a slight difference due to ambient temperature variations.
5. Maintenance and Cleaning
Proper maintenance ensures the longevity and safe operation of your heat mat.
- Cleaning: The heat mat features an IP67-grade waterproof surface, making it easy to clean. Disconnect from power before cleaning. Wipe the mat with a damp cloth. Do not use abrasive cleaners or immerse the mat in water.
- Storage: When not in use, ensure the mat is clean and dry. Roll it loosely for storage to prevent damage to the internal heating elements. Store in a cool, dry place.
- Inspection: Periodically inspect the mat and power cord for any signs of damage, such as cuts, fraying, or discoloration. Discontinue use if damage is observed.

Image 5.1: IP67 Waterproof Surface for easy cleaning.
6. Troubleshooting
If you encounter issues with your Spider Farmer Seedling Heat Mat, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mat not heating or heating insufficiently. |
|
|
| Temperature display is inaccurate. |
|
|
| Controller screen is off but mat is heating. |
|
|
If the problem persists after attempting these solutions, please contact Spider Farmer customer support.
7. Product Specifications
| Feature | Detail |
|---|---|
| Model Number | XHC-F042 |
| Mat Dimensions | 10" x 20.75" (25.4 x 52.7 cm) |
| Power Cord Length | 6.56 ft (200 cm) |
| Voltage | 120VAC |
| Frequency | 60Hz |
| Wattage | 20W ±10% |
| Temperature Range | 32-110°F (0-43°C) |
| Waterproof Rating | IP67 |
| Certifications | MET, UL Compliant, FC, CE, UKCA |
| Item Weight | 1.43 pounds |

Image 7.1: Detailed product specifications and dimensions.
8. Warranty and Support
Spider Farmer provides a 1-year after-service warranty for this product. If you have any questions or require assistance, please contact customer support.
For support, please refer to the contact information provided with your purchase or visit the official Spider Farmer website.
Online Resources:
- Spider Farmer Store: Visit Store
9. Product Videos
No official product videos from the seller were provided in the product data for this manual.





