A 4-watt adhesive heater that is UL approved for plastic keeper-type cages is a practical heating solution for small terrariums. Here are some key features and benefits:

Key Features:

• Low Power Consumption: At only 4 watts, this heater is energy-efficient, making it suitable for maintaining a warm environment without significant electricity usage.
• UL Approved: The heater has met specific safety standards, ensuring that it is safe for use in plastic enclosures and helping prevent potential hazards.
• Adhesive Design: The adhesive backing allows for easy installation directly onto the surface of the terrarium, providing seamless integration with your setup.
• Temperature Increase: Capable of raising the ambient temperature in small terrariums by about five degrees, helping to create a more suitable environment for temperature-sensitive pets.

Benefits:

• Enhances Comfort: By raising the temperature slightly, the heater helps create a more comfortable living environment for reptiles, amphibians, or invertebrates that require specific thermal conditions.
• User-Friendly Installation: The adhesive design simplifies setup, allowing you to place the heater where it is most effective without the need for additional mounting hardware.
• Ideal for Small Spaces: Perfect for small terrariums, it provides targeted heating without the need for larger, more powerful heating equipment.

Using a 4-watt adhesive heater can be an effective way to maintain the ideal thermal environment in your small terrarium setup. If you have any questions about using the heater or tips on ensuring proper heat management for your pets, feel free to ask!