Hygger Quartz Aquarium Heater with IC Temp Controller provides a hospitable underwater environment for your fish to thrive. <br><br> <b>Features:</b><br> IP68 100% Waterproof, Fully Submersible<br> Dual Protection - Durable Quartz Tube, Shatterproof construction; Double sealed material and protective container for scald preventing and anti punching<br> Accurate temperature control from 61°F to 90°F (16°C ~ 32°C)<br> Easy to read blue LED digital display shows water temperature<br> Ideal for used in freshwater and saltwater aquarium<br><br> <b>Specification:</b><br> Item name: Hygger Quartz Aquarium Heater with Temp Controller<br>Model: HG-925<br>Voltage: 110V-120V, 60HZ<br> Ground cord length: 4.9 ft<br>Available In:<br>200 Watt, Heat rod length: 6.3 inches, for 15~ 30 Gallon fish tank<br>300 Watt, Heat rod length: 7.7 inches, for 30~60 Gallon fish tank<br>500 Watt, Heat rod length: 10.4 inches, for 60~120 Gallon fish tank<br><br> <b>How to set temperature: </b><br> 1. Place heater rod and probe at the aquarium and keeps them both fully submerged<br> 2. Plug in power and you can see the blue LED digital number display shows current water temperature and the red light indicator on <br> 3. Press the set button to your desired temperature which will blink 3 seconds and starts to heat <br> 4. Once it reaches the desired temperature, red indicator light turns in yellow<br><br> <b>Warm Tips: </b><br> 1. Please read instructions and cautions of the package box carefully before use.<br> 2. Always keep the heater rod and temperature probe fully submersible.<br> 3. Before taking out the heater, please disconnect the power and wait for 10 MINUTES to cooling down.<br>