1、Intelligent Control: PID temperature control algorithm, realizing high heat and low power consumption, using intelligent frequency conversion technology, power size is freely adjusted by the chip, soft temperature control, always keep the most economic power constant temperature. 2、Suitable for Various Tank Sizes: This fish tank thermostat is suitable for tanks with a capacity below 400L and a size of 100‑120CM, making it versatile for different aquarium setups. 3、Fast Heat Conduction: Premium silicon carbide sand filling, fast heat conduction, energy saving and power saving; high purity nicholium wire, thickened heat transfer, faster heating and more power saving. 4、IPX6 Waterproof: Fish tank heating rod has IPX6 waterproof grade, high safety performance, built in accurate dual temperature sensing probe, always monitor the fish tank, safety is guaranteed. 5、Temperature Regulation: Fish tank heating rod adopts external temperature regulation, safe and convenient, the temperature display can be switched between Celsius and Fahrenheit, you can long press the temperature adjustment key for 5 seconds to switch. 6、High Definition LED Display: The fish tank heating rod has a high definition LED display that accurately monitors the temperature day and night, making it easy to keep track of the current fish tank temperature in real time. Item Type: Aquarium Heater Material: ABS Use: Fish Tank Automatic Thermostat Suitable for Water Volume: Below 400L Suitable for Fish Tank: Approx. 100-120cm/39.4-47.2in 1 x Heater 2 x Suction Cup