Thermostats features: Note: This item comes with AU plug, please confirm the voltage of your area before purchasing. When the engine is warm, it's easier to start, and when the engine is cold, it's very difficult for your engine. The engine block heater pad can help you heat the engine in cold winter, so that it can start better and faster. Choose durable material, stable performance, convenient and practical. Features Color:Assorted Material:Silicone rubber heating plate Size: About13.00X9.00X0.10cm/5.11X3.54X0.04inch Rated voltage: 220V Rated power: 150W Temperature: constant temperature is 40 degrees, 60 degrees, 80 degrees, 100 degrees and 120 degrees AU Plug: 230V Made of durable materials, this engine block heater pad can be used for a long term This heater pad has stable performance, fast heating speeds, convenient and practical There is double-sided tape on the back of the product, which can be directly pasted on the heated product Can make your engine to reach operating temperature much faster and gives you heat inside the cabin much faster as well Can warm internal engine components for quick starts in cold weather.