Feature: 1. INTELLIGENT CHIP: Aquarium heater uses PID temperature control algorithm to achieve high heat energy, low power consumption, the use of intelligent frequency conversion technology, the power size is freely adjusted by the chip, soft temperature control, always maintain the most appropriate power constant temperature. 2. 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. 3. 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. 4. 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. 5. IPX6 WATERPROOF: Fish tank heating rod has aquarium AI intelligence, quartz explosion proof heating rod, ultra short rod with IPX6 waterproof rating, high safety performance, to prevent fish and users from electrocution. Specification: Item Type: Aquarium Heater Material: ABS, Quartz Tube Use: Fish Tank Automatic Thermostat Heater Plug Specifications, Voltage: UK Plug 220V Temperature Control Range: 15‑34℃. Package List: 1 x Aquarium Heater2 x Suction Cups1 x Instruction Manual Note: Manual measurement please allow some error.