1、PID CONTROL: Submersible fish tank heater has aquarium AI intelligence, quartz explosion proof heating rod, ultra short rod body, using PID temperature control algorithm to achieve high heat energy, low power consumption. 2、INTELLIGENT CHIP: Aquarium heater using intelligent frequency conversion technology, power size is freely adjusted by the chip, soft temperature control, always maintain the most appropriate power constant temperature. 3、SILICON CARBIDE SAND FILLING: Aquarium heating rod selected silicon carbide sand filling, safe and stable, fast heat conduction, high purity nitinol wire, thickened heating, heating faster and more energy efficient. 4、HD LED DISPLAY: Fish tank heater has a HD LED display, monitoring temperature accurately day and night, easy to grasp the current fish tank temperature in real time. 5、SAFE TO USE: Submersible aquarium heater external temperature control, one key cycle, safe and convenient, built in accurate dual temperature sensor, always monitor the fish tank, safe and secure. 6、IPX6 WATERPROOF: Fish tank heating rod supports Celsius and Fahrenheit switching, different temperature display according to the demand, with IPX6 waterproof rating, high safety performance, prevent fish and users from electric shock. Item Type: Aquarium Heater Material: ABS, Quartz Tube Use: Fish Tank Automatic Thermostat Heater Temperature Control Range: 15‑34℃ 1 x Aquarium Heater 2 x Suction Cups 1 x Instruction Manual