Feature 1PID COMPUTER CONTROL SYSTEM: Adjustable aquarium heater adopts PID computer control system, copper wire heating, quartz explosion proof tube, fast heating speed, power saving and safety. 2DIGITAL LED DISPLAY: Mini fish tank heater adopts LED display to show the set temperature and real time water temperature, with high accuracy temperature probe, high temperature protection. 3POWER FAILURE MEMORY FUNCTION: Mini aquarium heater has power off memory function, restart after power off, the product will automatically remember the set temperature at the last power off. 4OVER TEMPERATURE PROTECTION: When the water temperature exceeds 34, the screen will display HH and flash to remind and stop heating, when the water temperature is lower than 15, it will prompt LL, low temperature alarm. 5WIDE RANGE OF APPLICATION: 15W aquarium heater is widely used, can be used in freshwater, saltwater fish tank, turtle tank, grass tank and other kinds of small tanks and low water turtle tank.SpecificationItem Type: Mini Fish Tank HeaterMaterial: Quartz Tube, PlasticUse: Fish Tank Mini Heating RodVoltage: 100-240VAdjustable Range:Celsius: 15-34Fahrenheit: 59-9Applicable Water Volume: Below 4LPower: 15W .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x MiniFishTankHeater1 x Plug Adapter1 x Suction Cup