Features: 1.Titanium Alloy Heating Material: Al intelligent submersible aquarium heater, made of premium titanium alloy heating material, efficient heat conduction, fast heating speed. 2.PID Constant Temperature: Aquarium heater adopts PID temperature control algorithm to realize high heat energy, low power consumption, soft temperature control and always maintain appropriate power constant temperature. 3.Safety Material: Aquarium heater is made of ABS shell, which is durable, safe and non toxic, and has no harm to water quality and aquatic animals and plants. Freshwater seawater can be used. 4.12V Safe Low Voltage: Aquarium heater has 12V safe low voltage to prevent electric fish. When the heater is working, it will immediately disconnect the power supply after leaving the water surface and stop working. 5.Separate Controller: Submersible fish tank heater uses separate high definition LED to control the temperature outside the cylinder, the fault is clear at a glance, and the operation is convenient and safe. 6.Double Temperature Sensing Probe: Submersible fish tank heater has double temperature sensing probe, which monitors the situation in the cylinder in real time, heating for 1 hour and constant temperature for 3 hours. Specification: Item Type: Aquarium Heater Material: ABS Usage: Fish Tank Digital Display External Control Heating Rod Plug Specifications, Voltage: EU Plug 220V Temperature Control Range: 15-34°C PackageList: 1 x AquariumHeater 2 x Suction Cup 1 x Fixed Hook 1 x Hook 1 x Instruction Manual Note： 1. The heating rod is completely submerged under water to prevent unnecessary trouble caused by burning the rod body and burning the protective shell. 2. Because the heating rod heats up quickly, the heating rod should be placed in the position of rapid water flow as much as possible to heat the fish tank evenly. 3. It is not recommended to put the heating rod in the bottom filter, because some bottom filter water levels are not enough to submerge the rod, resulting in accidents. 4. Do not bury the heating rod in the sand and gravel soil at the bottom of the fish tank, because the specific heat capacity of sand and water is different, which will cause damage to the heating rod. 5. When the heating rod works, it will have a slight static electricity (12V or less), which is within the safe range, please use it with confidence.