🔥 Heat Up Your Space with Style! Get started in no time with hassle-free installation. Easily track temperatures with a clear Celsius readout. Experience rapid heating with 500W power! External installation means more room in your tank. Stay informed with dual temperature sensors for inlet and outlet. 500W Power Dual Temp Sensors Easy Installation The ISTA I-H616 500W Inline External Heater is a powerful and efficient heating solution designed for aquariums and water tanks. With dual temperature sensors for precise monitoring, a space-saving external design, and a quick installation process, this heater ensures optimal water temperatures without compromising your tank's space.