Temperature can be adjusted conveniently and exactly. Model: HT-2300 Power: 300W Voltage: AC 230/115V Frequency: 50/60Hz Recommended Aquarium Size: 300-350 liters tank
User Instructions: Please check the submerged heater before you use them. If the water came into the heater, please cut off the electricity and stop using it. The heater must be used in rated voltage