Advanced Intelligent Thermostatic SystemNew upgraded bird bath heater introduces a more sensitive temperature control device, engineered to maintain a consistent temperature in your bird bath during winter. The device activates when the water temperature falls below 80F and deactivates once it rises above 100F, ensuring a low energy consumption while maintaining the optimum temperature range for your birdsAluminum Body with Teflon CoatingConstructed with a solid aluminum body, our bird bath heater facilitates strong and even heating. To prevent rust and avoid the buildup of limescale and stains over time, the entire unit is coated with high-density Teflon, providing a clean and fresh water source for birds in the long runAnimal Friendly and SafeCompared with the old generation, it has made a great improvement. The heat conduction grooves are added between the heating wires, to produce even heating on all parts, so it can get a longer service lifeEasy To UsePut it in the bird bath, power on, it will work automatically. All the winter, the birds, squirrels, or other cute animals in your yard will no longer suffer from thirst because of lack of water.Also can be used as for chicken poultry water heater, horses livestock water heater and other pets heated waterer, a good helper to avoid icingNo Assembly Required-Plug and PlayNo assembly or replacement of spare parts required for the bird bath heater, place the bird bath de-icer heater in the center of the bird bath, the water surface needs to be covered with water over the heater, then just plug it in and your animal friends birds, chickens, squirrels, rabbits, etc. will be able to enjoy the warm water all winter long. NOTE: Please make sure there is enough water to completely cover the Bird Bath Heater de-icer with water