VIVOSUN 3-in x 20-in Seedling Heat Mat and Digital Thermostat Set – UL and MET-Certified for Germination and Indoor Propagation

Overview

The VIVOSUN 3 inch by 20 inch Seedling Heat Mat and Digital Thermostat Combo Set is designed for precise, reliable warmth where seedlings, cuttings, and small indoor projects begin. It blends a compact heating mat with a responsive controller, so you can establish a consistent microclimate without guesswork.

Consistent warmth and even heat: The mat maintains a target range around 68-86°F (20-30°C), creating a steady environment for early root formation and gentle growth. Radiant far-infrared heat provides even distribution, and a reinforced heating film with double insulation helps prevent hotspots, especially when used with a humidity dome.

Durability and safety

Built to last, the mat uses durable PVC and carries an IP67 rating for easy cleaning in indoor spaces. It is designed for indoor use; avoid immersion in water. The product meets UL and MET standards for added peace of mind.

Energy efficiency and versatility

With a low power draw of about 6.5 watts, this set works well for extended sessions. When paired with the VIVOSUN thermostat, it supports not only seed starting and propagation but also other indoor warmth needs like terrariums or controlled fermentation spaces.

Practical uses and setup tips

Place the mat under seed trays or propagation flats, optionally with a humidity dome for dew-like moisture. For best results, maintain indoor temperatures and monitor substrate temperatures to tailor heat to your project.

What’s included and how it helps

• 3 inch by 20 inch heat mat
• Digital thermostat controller
• Indoor-friendly design with easy setup
• Compatibility with humidity domes and indoor environments

At-a-glance specifications

• Temperature range: 68-86°F (20-30°C)
• Power usage: 6.5 watts
• Material: durable PVC with dual insulation
• Certifications: UL and MET