Features!100% Brand new!Anti-explosive design. The fish tank heater made of explosion-proof quartz glass and a nickel-chromium heating wire with silicon carbide heat conduction, faster water heating and long lasting. The shell is a high temperature resistant PC material, which can effectively protect the fish from scalding, durable and safe to use. !Smart LED display controller. It's very easy to set the temp on the LED external controller, just press the set button to choose the temp digits from 20 ℃ to 34 ℃ . !Intelligent water sensor & over temp protection. This heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature. !Suitable for fresh water & marine water fish tanks. Comes with 2 strong suction cups, easy to install the heater on to the fish tank wall. The fish tank heater can be placed horizontally or vertically, but must be fully submerged underwater.! !Specifications!Material: PC housing, quartz glass tube!Power: 300W/500W/800W/1000W/1200W!Color: Black+Red!Voltage: AC 110V or 220V, 50~60Hz!Plug Type: US/EU Plug!Temp Control Range: 20 ℃ ~34 ℃ /68 ℉ ~93.2 ℉ ! Waterproof Grade: IP68! Power Cord: 180cm(US plug), 190cm(EU plug)Fit For Tank:! 300 Watts! Fish tank water range: About 200L/53 US gallon! Recommended tank size: