HiTauing Aquarium Heater 50W100W200W300W500W Submersible Fish Tank Heater with Overtemperature Protection and Automatic Po

How to use the temp settingPress the button on the controller over and over the set temp digits will go circularly from 63 to 94 when you set it to the digit you want stop and wait the led flashing for 4 times then the setting is done and the led will go on displaying the water tempHeating indicator lightThere are 2 indicator lights below the display screen the left light will on red when the submersible aquarium heater is heating the right light will on green when it stops heatingElectronic temperature control heaterSpecificationsVoltage110 V120V Frequency 50HZLed Indicator LightWhen it working the indicator light is redTemperature Range 63 to 94 Temp exactness1Aquarium Heater SubmersibleDoubleloop circuit design the water temperature sensor is installed in the IC circuit to prevent air burning and heating over temperatureTemperature control is accurate adjustable View full description