<b>♥ Diving aquarium heater 100 watts ♥</b><br><br>Specification:<br><br>Power: 100W<br><br>Voltage: 110V<br><br>Water tank capacity: 5~25 gallons<br><br>Adjustable temperature range: 44°F-99°F (±1°F)<br><br>Wire 1: 47 inches (from controller to plug)<br><br>Wire 2: 67 inches (from controller to heater)<br><br><br><b>packing list:</b><br><br>1 100W aquarium heater with heater protection device<br><br>1 external temperature controller<br><br>2* Suction cup (heater)<br><br>2* Fixing tool (for controller)<br><br>1 user manual<br><br>1* packing box<br><br><br><b>Notice:</b><br><br>1. For your safety and the best purchase experience, please read and follow the instructions carefully. If you have any questions, please contact us immediately.<br><br>2. During work, the entire heater must be completely immersed in water, but not buried in sand or mud.<br><br>3. Do not put the controller in water.<br><br>4. Please cut off all equipment in the aquarium before installing the heater.<br><br>5. Unplug the heater, wait at least 15 minutes, let the heating cool down before removing it.<br><br>6. It is best to install the heater in a place with strong water flow so that the entire aquarium can be kept at the same temperature.<br><br>7. If the wire or heater is damaged, do not use it.