Large aquarium submersible double heater with intelligent auto stop heating system for freshwater and saltwater 150-300L tank. Key Features: 1. Included: • 1x Heater Rod, • 1x Controller Holder, • 3x Suction Cups(Includes 1-piece spare part), • 1x Hook, • 1x User manual 2. Suitable for freshwater and saltwater. 3. The submersible heater will automatically cut off the power and stop heating when the water temperature exceeds 94 °F, it will display an error code and sound an alarm until the water temperature is below 94 °F 4. When the tank water is lower than the minimum water level, the heater will auto-shutoff, and it will restart until completely immersed in the water 5. The multiple heating protection protects the inhabitants in aquariums 6. Large LED digital display, you can easily check the current water temperature, current working power, and alarms 7. Just press the SET button once, and you can set the temperature from 59-93, relative to overheating protection, the “Low” light will flash when the water temperature is lower than 59 °F 8. Hygger upgraded the heater with the Smart chip and made the temperature accurate to 1 °F, the temperature control accuracy even is ±0.1 °F 9. The heating will stop when the water temperature reaches the set temperature 10. The aquarium heater is made of explosion-proof glass and high-temperature resistant nickel-chromium heating wire 11. It works with faster water heating, is safer, and longer-lasting 12. The heater guard is made of high-quality PC plastic to protect tank inhabitants from burns 13. The heat will auto turn off when it is out of water 5 cm, the thermostat will sound an alarm and the “auto shut off” will flash, and it will resume functioning upon return 14. Heater tube material: Glass 15. Voltage: 220-240V/50Hz ...