SEAOURA Aquarium Heater, 300W Fish Tank Heater for 50-60 Gallon, Submersible Heater for Fish Tank with Over-Temperature Protection, Automatic Power-Off, Saltwater Freshwater

If an ‘E1’ error code appears when using for the first time. Please try the following:

1.Fully submerge both the heater and the temperature probe in water 2.Power on the heater and wait for 10s 3.Simultaneously press and hold the (℃/℉) button and the (Hi/Low) button for about 5s

Warm tips: Please pay attention to the high and low temperature alarm indicator, do not set the wrong

Warm tips: When you receive the temperature probe, it shows 32℉, please contact the store immediately for replacement.