Aquarium Heater 500W 800W Submersible Fish Tank Heater With Double Explosion-Proof Quartz Tubes And External Lcd Display Controller For Marine Saltwater And Freshwater

2 Tube Explosion-proof Quartz Glass Aquarium HeaterThe inside of this aquarium heater is made of 2 explosion-proof quartz tubes and high temperature resistant nickel-chromium alloy heating wires which has excellent thermal conductivity and is very safe and durable. The shell is made of high-quality plastic with micro-holes which can evenly transfer heat to the outside while effectively protecting the fish and you from being scalded Precise Intelligent Heating & Memory FunctionThe aquarium heater has built-in sensitive dual temperature probes making the temperature accuracy within ±1/±1. And when the water temperature is lower than the set temperature by 1/1 the heater will automatically start heating in a low energy consumption mode. Memory function can automatically retain the previous set temperature when the heater is restarted no need to set it again 2 Automatic Power-off Protection & Prevent Fish From BurningFor the protection of the fish and your safety the fish tank heater is equipped with 2 automatic power-off protection functions: Run Dry Protection: automatically turns off when the heater is exposed to air the display shows E1 and flashes. Overheat Protection: automatically shuts off when the water temperature exceeds 95(35) the display shows HH and flashes Convenient External LCD Display ControllerThe dual-temperature LCD display can show the real-time water temperature and the set temperature at the same time which is very clear and you don’t need to buy a thermometer separately. Through the button on the controller you can easily adjust the temperature and change the unit without wetting your hands (Temp range: 59-93/15-34 long press for 5 seconds can convert the unit from to ) Wide Range of Use & Reliable PurchaseAQQA 2021 upgraded submersible aquarium heater is very suitable for 66-220 gallon aquariums and can be used for both marine saltwater and freshwater. AQQA aims to provide every user with the highest quality products and services we offer a 12-month warranty and professional after-sales service any questions please dont hesitate to contact us