Upgrade Heat Pad: Apply environmental-friendly carbon film heating material for fast heating and heatdistribution evenly, and the high toughness PVC sealing material for excellent insulation, safe and non deformable. Dual thermostat protection mode completed by built-in 50℃（122℉）temperature control chip and external adjustable thermostat control. PID Smart Thermostat: Come with intelligent PID thermostat which can accurately control the heating temperature, monitors and control the temperature all the time, making the heating pad work more efficiently and stably and extending the service life of the heating pad.Constant temperature control range is from 20℃ to 50℃ (68°F to 122°F) Convenient to Use: This reptile heating pad with thermostat design with adlhesive paper, can be mounting on bottom or side of terrarium, easy and safe for use, ideal for use with reptile, amphibian, small animals or seeds, plant. 6*8 inch (8w) recommend for 10-20gal terrarium. Easy to Setup: Clean the surface of the glass tank and keep it dry, then stick the heating pad to the bottom or side, Then connect the power supply, set the temperature, and place the probe into the tank. Press both▲ and button ▼ for 2 seconds to change temperature unit to Fahrenheit or Celsius. Matters Needing Attention of Use: Do not place on flammable substrate surfaces, such as wooden items, plastic, carpets, etc. Do not cover the heating pad with anything. Do not place glass containers in areas that may be exposed to direct sunlight, please contact us for any questions or needs, and we will reply within 24 hours. 1*reptile heat mat with thermostat