MET safety certifiedComply with UL 499CSA C22.2 No.64 Seedfactor Thermostat Controller Displays Real-time Temperature Via LED Thermostat and is 100% Accurate - It's designed to raise the root zone temperature above ambient room temperature by approximately 5 F - 30 F, with a maximum achievable temperature of 108 F and a minimum of 50 F. 100% PROFESSIONAL RELIABILITY: The controller maintains a stable temperature between 50-108F (10-42C) for professional horticultural systems; the sensor probe delivers accurate readings in both cool and warm environments. Designing with waterproof construction, our seeding heat mat is safe for use indoor plantings,The new, stronger heating wire and thicker multi-layer construction offer more uniform heating and the durability to withstand rugged greenhouse environments. The Seedfactor Seeding Heat Mat adopts the latest 7.5MM thickening,105 degrees of high temperature resistant cylindrical SJTW 5.9ft water-proof power cord (thicker than the general power cord, solid, high temperature resistant), safer and more durable, and guarantee the stability of seedling mat safety work. Color : Heat Mat & Controller - Black Size : 10 X 20 & Thermostat Controller Adjust Temp Setting: Press and hold the SET button for 3 seconds to enter Temperature Setting Mode. Press the UP or DOWN button to set the desired temperature. Nurture your seedlings by ensuring they have a warm area for root growth and germination. Seedfactor's professional heat mat maintains temperatures in the sweet spot of around 10-20 above ambient air temperature - perfect for seed starting and cutting propagation! Intended for indoor use only, this product is waterproof and easy to clean to make storage a breeze. 1. The heat mat can adjust temperature , keep a steady temperature and distribute heat evenly, even in the cold, for faster sprout growth. 2. The heat mat is designed to raise the root zone temperatures approximately 5 F to 30 F above ambient room temperature. 3. Displays real-time temperature via LED thermostat. 4. The heat mat is engineered with durable PVC material to withstand temperatures between -4F and 248F. 5. Both heat mat and sensor probe are waterproof. 6. Seedfactor Thermostat Controller Displays Real-time Temperature Via LED Thermostat and is 100% Accurate - It's designed to raise the root zone temperature above ambient room temperature by approximately 5 F - 30 F, with a maximum achievable temperature of 108 F and a minimum of 50 F.