<p><b>CAUTIONS:</b></p> <p>1, The device must be used under rated voltage 120v. It will be damaged if used under 220V</p> <p>2, The heater must be fully submersed into the water. The external temperature controller must be kept away from the water as it is not waterproof</p> <p>3, Avoid burning the skin, let it cool before touching</p> <p>4, Read the instruction in package carefully before use it</p> <br> <p><b>Products Highlight</b></p> <p>1, Easy to install</p> <p>* AUOMII aquarium heater has small size as 2 layers heating tube stacked structure. It is easy to hide in mini tank</p> <p>* 3 strong suction cups</p> <p>2, Easy to set temperature</p> <p>*Press and hold the power button for more than 3 seconds to unlock the key.</p> <p>* Short-press the button once, the temperature number increase 1℉. Keep short-pressing until the target temperature is reached</p> <p>* It is a cyclic adjustment</p> <p>3, Easy to read</p> <p>*Built-in Thermometer, Dual LED display. The water temperature will be displayed on both the heater and the external temperature controller in real time</p> <p>4, High accuracy up to 1℉</p> <p>Advanced Intelligent Frequency Conversion Technology. If the temperature is lower than the target value of 0.2°F, the heater works at variable frequency to keep the temperature constant. The green indicator light on. If the water temperature is lower than the target temperature of 1°F, the heater will work at full power and the red indicator light on</p> <p>5, Safety</p> <p>*4 protections: Leakage protection/Overheating protection/Dry running protection/Out of water protection</p> <p>*scalding resistant and explosion resistant</p> <p>6, Suitable for both saltwater and freshwater</p> <br> <p><b>Parameters:</b></p> <p>Voltage: 100~130V</p> <p>Power: 100W</p> <p>Suggest fish tank: 1~20Gallon</p> <p>Temperature Range: 64~93 ℉</p> <p>Constant Temperature Accuracy: 1 ℉</p> <p>Cord length: 4.3ft</p> <p>Package include:3 suction caps, 1 heater, 1 instruction</p>