Precision 400 Watt Heater

Marineland Precision Submersible Aquarium Heater features a built-in thermal safety switch that maintains proper aquarium water temperature within 1 degree of accuracy. The thermal safety switch prevents heater failure during operation. If the temperature exceeds the pre-set internal parameters, the Precision heater shuts off automatically and turns on once it cools down. In addition, the Precision Submersible Heater has a top-view scale and high-visibility sliding scale, providing dual visual confirmation of temperature adjustments. The temperature control knob features a "Click Set," which clicks for every 1 degree you change the temperature. There is also an advanced mesh heating element that surrounds the mica core, providing superior heat transfer and durable performance. Includes an advanced mounting bracket that securely attaches to glass and provides three window positions, allowing temperature display to be viewed from different angles. UL Listed. For use with freshwater or marine aquariums.